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  • Glossary
  • Michael Hunter, Charles Littleton, Glossary of terms used in the work-diaries of Robert Boyle

    This glossary is compiled from those appearing at the end of each volume of the Works and Correspondence of Robert Boyle. It elucidates various technical terms and obsolete words used by Boyle in his work-diaries and other works. It makes no claims to being comprehensive. As it is based on existing glossaries compiled for other portions of Boyle's corpus it does not contain all the technical terms found in the work-diaries, especially as the work-diaries were intended more for Boyle's private use. This is seen as a continuing work, and we would appreciate comments from readers concerning other terms that we should include in this collection. The present glossary is thus one step in building up a comprehensive view of Boyle's terminology and vocabulary across his entire corpus, both published and manuscript, and continuing work on the glossary will only increase its scope.

    The policy in compiling the glossaries for the Works and Correspondence, of which this present one is a composite, is as follows. We generally exclude words that appear in the Concise Oxford English dictionay (9th edition (1995) and subsequent editions) unless they are highly unfamiliar or are used to mean something not indicated there. Neither do we include words which Boyle himself indicates that he perceived as unusual and which he elucidates in the text, usually terms specific to a particular country or craft. Readers need also to make some allowance for unfamilar spellings of familiar words, in particular considering alternative ways in which a word might be rendered phonetically, as we have tended not to include such variants; for example, Boyle's variation between using 'baulm' and 'balm', 'soader' (or 'soder') and 'solder', etc. We are also sparing in including neologisms on Boyle's part the meaning of which is obvious, even if the word in question is not in common use. What are included in the glossary are numerous Latin and English technical terms which frequently recur, such as 'per deliquium', 'syrup of violets' or 'sugar of Saturn'. In elucidating them, we have used a variety of sources, ranging from contemporary works to nineteenth-centuiry compendia and twentieth-century studies. We have not noted here the sources used for our definitions.

    There is one major category of words which do not receive much treatment here, partly because they appear only in the work-diaries, and partly because we cannot always be certain how to gloss them. These are the Decknamen, the cypher and code words which Boyle used to conceal the materials he was dealing with in his experiments from outside eyes. A few work-diaries, principally XXIII, XXXIV and XXXV, consist of series of entries dealing with materials such as 'negerus', 'durca', 'tassafa', 'banasis', etc. Lawrence Principe has examined Boyle's cypher carefully and discusses its nature in L.M. Principe, Robert Boyle's Alchemical Secrecy: Codes, Ciphers and Concealments, Ambix, 39 (1992), 63-74. An example of a section of this code, with a 'translation' based on Principe's deciphrement can be found in Michael Hunter and Charles Littleton, The Work-diaries of Robert Boyle: a Newly Discovered Source and its Internet Publication, Notes and Records of the Royal Society, 55 (2001), 373-90. However, for the moment, we have not been able to compile a complete glossary of the Deckname and their definitions. By making these work-diary entries more accessible to scholars and, we hope, chemists, we would like to facilitate further discussion on the meaning of these code words and the intent of the recipes in which they appear. For the moment, though, we must keep most of the terms in this code undefined (except for a few, for which see the glossary)

    Another category of words which are not glossed here are the highly abbreviated Latin terms for substances used in medicinal preparations -- often roots, leaves or barks of plants, gums, resins, tinctures, etc. -- found in VII and especially X. Our treatment of these terms and our rationale for leaving them abbreviated is further spelled out in the section on 'Abbreviations' in the Statement of Editorial Policies. Some of the more common terms may be defined here, where there is overlap with the existing printed glossaries. Readers who wish to have access to definitions of these Latin terms may wish to view the work-diaries on the Perseus Project website, at www.perseus.tufts.edu, where they can easily access a lexicographical gloss on the Latin words which appear in the entries.

    Further confusion when reading Boyle's chymical recipes in the work-diaries may arise from the various possible meanings of the terms salt, sulphur and mercury, which in the seventeenth century had both their current, modern meaning and a contemporary (and Paracelsian) sense. According to Paracelsus each substance consisted of three components, each unique to that substance, into which it could be analysed and divided: Salt, the fixed and solid part; Sulphur, the inflammable and combustible; and Mercury, the vaporous or liquid. Thus when Boyle writes of 'mercury' he may be referring to the known chemcial substance quicksilver (Hg), or he may be referring to this putative vaporous component of a substance.

    For comments or additions to the glossary, please contact Prof. Michael Hunter at m.hunter@bbk.ac.uk

    Glossary

    acetum
    acid
    acetum minerale
    'mineral acid', i.e. one of the three acids so considered - sulphuric, nitric, and hydrochloric (muriatic); also generically, any sour or acidic liquid prepared from a mineral body
    acetum quernicum
    'acid of oak', presumably made by the distillation of oak bark or wood
    ad siccitatem
    to the point of dryness
    aeolipile
    a pneumatic instrument illustrating the force with which vapour generated by heat in a sphere rushes out of a narrow aperture, akin to the 'engine' of Hero of Alexandria (c. 60 AD)
    affusion
    a pouring on or into
    alcalisate
    alkaline
    alcool
    an essence, or spirit obtained by distillation, or a very fine powder
    alcool of wine, alcool vini
    alcohol of wine, pure or rectified spirit of wine
    alembic
    an apparatus formerly used for distillation, consisting of a cucurbit or gourd-shaped vessel, containing the substance to be distilled, surmounted by the head, or alembic proper, the beak of which conveyed the vaporous products to a receiver, in which they were condensed
    allum
    see roch-allom
    althea
    the marsh-mallow, used in many medicinal preparations
    amel
    enamel
    amianthus
    asbestos
    ana
    'equal amounts of each', used in medicinal recipes
    antimony, butter of, butyrum antimonii
    white crystalline antimony trichloride, made by dissolving antimony trisulphide (the native form of the antimony ore) in hydrochloric acid and distilling it, or by distilling a mixture of the antimony ore with corrosive sublimate (mercuric chloride)
    antimony, flowers of
    any sublimate prepared from antimony trisulphide (the native ore), these flowers are generally white when the sublimation is carried out in the air (antimony oxides), but sometimes red or black (antimony sulphides) when the sublimation is done in closed vessels
    antimony, glass of
    a vitreous material composed mostly of antimony oxide and sulphide, obtained by roasting antimony trisulphide (the native form of the antimony ore) and fusing the resultant 'ash'; used as an emetic; also known as vitrum antimonii (Laurence Principe, "Chemical translation" and the role of impurities in alchemy, Ambix 34 (1987), 21-30)
    antimony, regulus of
    the pure metallic antimony, separated from the sulphur with which it is joined in the ore
    antimony, sulphur of
    i.e., the putative combustible component of antimony; Basil Valentine claimed to extract this substance from glass of antimony by acetic acid. See L. Principe, "Chemical translation" and the role of impurities in alchemy, Ambix, 34 (1987), 21-30
    aqua cinamonii
    'water of cinammon', an aromatic beverage prepared with cinammon, acting as a carminative and restorative
    aqua fortis
    'strong water', a corrosive acid, usually nitric acid
    aqua mirabilis
    'wondrous water', a cordial distilled from a mixture of various spices and aromatics with alcohol
    aqua pugilum
    'water of the fighters', a liquid which Basil Valentine described in the second key of his Zwolf Schlssel (Twelve Keys), which is used to volatilise gold and extract its 'tincture'; Boyle's menstruum peracutum (q.v.) is based on this (L. Principe, The Gold Process, in Alchemy Revisited, ed. Z. van Martels (Leiden, 1990), pp. 200-5, on p. 204)
    aqua regia, aqua regis, aqua regalis
    'royal water', a mixture of nitric and hydrochloric (muriatic) acids; one of the few solvents which can dissolve gold
    arcanum
    secret; often used to refer the hidden preparation of a particularly precious secret substance
    aurum fulminans
    'fulminating gold', an easily explosive powder made by precipitating gold from its solutions with an ammonia compound
    aurum potabile
    'potable gold', a widely-sought medicament made from gold
    balneum arenae
    'bath of sand', a method of heating a substance by placing its container in sand and heating the sand from below
    balneum Mariae
    'bath of Mary', hot-water bath, a vessel of water in which another vessel is heated; named after an alleged Jewish alchemist of the first century; sometimes referred to simply as 'Balneum'
    balsam
    a name given to certain resinous and odorous substances, often procured by making an incision in the bark of plants. It was believed to have the power to preserve substances from putrefaction. Also used to refer to any thick, syrupy medicinal preparation used as a salve
    balsam of sulphur
    a balsam made from sulphur and olive oil, used largely to relieve catarrh and other chest infections
    balsamus sulphuris terebinthinati
    'balsam of therebinthated sulphur', a balsam for chest afflictions made from sulphur and turpentine digested and distilled together
    barachid/barakid
    Boyle's code word, appearing under a variety of related spellings, for 'silver' (see Principe, Alchemical Secrecy)
    Barbados tar
    a greenish petroleum
    benjamin
    i.e. gum benjamin, benzoin
    bezoardum minerale/bezoar minerale
    an oxide of antimony used medicinally, generally made by digesting butter of antimony (q.v.) with aqua fortis (q.v.)
    bezoardic
    having the properties of bezoar, an antidote
    bloodstone
    i.e. haematite, a native iron oxide, used against haemorrhages and fluxes
    bole
    any of several varieties of friable earthy clay
    bole-armoniack, bolus armeniae, bolus armeneus
    a red, iron-impregnated, astringent clay from Armenia, used medicinally as a styptic
    Bologna stone, Bolonian stone, Bononian stone, bologna phosphorous
    a dense white stone, the naturally occurring form of barium sulphide. In 1603 Vincenzo Cascariolo discovered that a sample of this stone collected near Bologna, after some chemical preparation, remained phosphorescent after being exposed to the sun for a period of time
    boracite
    a mineral composed predominantly of magnesium borate
    butter of antimony, butyrum antimonii
    see antimony, butter of
    calcination
    reduction by fire to a calx, powder or friable substance, by subjecting a substance to a roasting heat
    calibash
    a gourd or similar large fruit that can be used as a container for liquid
    calx
    a powder or friable substance produced by roasting
    calx viva
    quick-lime (calcium oxide)
    campanam, per
    see per campanam
    cantharides
    a genus of coleopterous insects of the family Trachelidae. The species used in pharmacy (Spanish fly) has golden-green elytra
    caput mortuum
    'dead head', the substance remaining at the bottom of the retort after distillation
    caranna
    a soft and tenacious rosin derived from a West Indian tree and used in balsams and plasters
    carduus benedictus
    'the blessed thistle', a bitter and astringent Mediterranean plant used medicinally as a tonic and universal antidote
    caryophill
    cloves
    cassiteros
    Boyle's code word for 'tin', from transliterated Greek term (see Principe, Alchemical Secrecy)
    Castile soap
    a fine hard soap made with olive oil and soda, also called Spanish soap
    cerussa
    white lead, i.e., a mixture of carbonate and hydrate of lead
    cinnabar
    the native mineral cinnabar, the ore of mercury, mercuric sulphide
    cochineal
    a dye-stuff consisting of the dried body of the insect Coccus cacti which is found on several species of cactus in Mexico
    cohobation
    the repeated distillation of a material, done by pouring the distillate back upon the residue
    colcothar (of vitriol)
    the brownish red iron or copper oxide which remains behind after green or blue vitriol have been strongly roasted. Often the residue left in the retort after the distillation of sulphuric acid from iron sulphate
    colliquation
    the action or process of melting together
    colophony
    a type of resin
    concinnity
    internal harmony or congruity; mutual adaptation of parts
    contrayerva
    a name given, in general use, to the root stock and scaly rhizome of species of Dorstenia, native of tropical America and used as a stimulant and tonic
    cornu cervi
    hartshorn (q.v.)
    crabs' eyes
    concretions of carbonate and phosphate of lime found in the walls of the stomach of the river crayfish, which, when powdered, were used medicinally as an absorbent
    crasis
    in medicine, the due distribution of the bodily humours in a healthy person; in chemistry, a mixture or the totality of the virtues of a given substance
    cremor tartari
    see tartar, cream of
    crocus
    any of various yellow or red powders, often obtained by calcining metals either alone or with sulphur, especially iron
    crocus martis
    iron oxide, a dark red powder obtained by calcining iron sulphate or iron with sulphur
    crocus metallorum
    'crocus of metals', an antimony sulphide, a bright yellow powder obtained by calcining or precipitating antimony; also known as crocus of antimony, crocus antimonii
    cucurbite
    a vessel or retort, originally gourd-shaped, forming the lower part of an alembic (q.v.)
    Danzig vitriol
    copper sulphate
    daucus
    the garden carrot, whose seeds (semen dauci) were used medicinally
    deflagrate
    to rapidly combust
    deliquium, per
    see per deliquium
    diapalma
    a drying compound plaster containing olive oil, litharge, white wax, hog's lard, and sulphate of zinc
    diaphoretic
    causing sweat
    discuss
    to dispel, disperse
    duelech
    term used by both Paracelsus and van Helmont to mean the urinary calculus. According to van Helmont, it was not tartar, as Paracelsus claimed, but made from spirit of urine and spirit of wine.
    durca/durka
    boyle's code word, appearing under a vareity of related spellings, for 'copper' (see Principe, Alchemical Secrecy)
    eagle stone
    aetite, a hollow nodule of clay-ironstone containing within it another (variable) substance; thought to have extensive medical benefits, such as facilitaing childbirth and preventing abortions
    edulcoration
    sweetening, the process of eliminating corrosive principles
    elixir proprietatis
    Helmontian medicine made by dissolving aloes, myrrh and saffron in a solution of salt of tartar (q.v.), and evaporating, then extracting the spirit of wine; see Partington, History of Chemistry, ii, 300.
    elixir salutis
    'elixir of health', i.e. tincture of senna, a laxative preparation made with senna leaves, caraway, cardamon seeds and raisins
    emplastrum
    a plaster to be applied to sprains or sores
    empyreumatical
    having qualities as if burnt by fire, as in smell, taste, etc.
    English vitriol
    iron sulphate (green vitriol)
    ens veneris
    essence of copper, a copper compound with medicinal properties mentioned by van Helmont and prepared by George Starkey and Boyle, see Usefulness, II, sect. 1 (1663), in Works, iii, pp. 500-5
    erysipelas
    a local febril disease accompanied by diffused inflammation of the skin
    esurine
    lit 'hungry', i.e. corrosive
    exantlate
    to draw out as from a well, to exhaust; in Helmontian terms, to weaken or debilitate the corrosive power of a solvent
    febrifuge
    a medicine to reduce fever
    fixed nitre
    a salt prepared from nitre which is stable (unlike nitre) in the fire; often potassium carbonate or sulphate
    flowers, flores
    sublimate
    flowers of antimony, flores antimonii
    see antimony, flowers of
    flowers of sulphur, flores sulphuris
    sublimed sulphur, a light yellow powder
    fluor albus
    see white fluors
    fluores
    generic name for class of minerals resembling gems (e.g. fluorites) but readily fusible
    fondant
    flux, a substance that is mixed with a metal to facilitate its fusion
    fritta/frit
    a partly fused mixture of sand and fluxes ready to be melted in a crucible to form glass; also shreds or fragments
    fulminating gold
    see aurum fulminans
    glass of antimony
    see antimony, glass of
    glass of lead
    see lead, glass of
    glossopetra
    a stone said to have the shape of the human tongue. It was often employed to indicate fossil teeth.
    glyster
    i.e. clyster, an enema or other sort of medicine injected into the rectum
    groove
    a mine shaft or trench
    gum dragon
    the viscous substance obtained from the plant tragacanth, used in plasters, ointments, etc.
    gum guttae
    the gum resin derived from the stalagmitis plant
    gum lac
    the dark-red resinous incrustation produced on certain trees in the East Indies by the puncture of an insect, Coccus lacca, used as a scarlet dye; also known as seed-lac.
    hartshorn
    the horn or antler of a hart, the substance obtained by rasping or slicing the horn. Distilled, it is the chief source of ammonia
    Hassian retorts
    stoneware retorts capable of withstanding high temperatures for long periods
    haustus
    dose
    helmet
    top of a glass alembic; distillation head
    horn silver
    fused silver chloride, so called because it resembles horn
    ignis fatuus
    a phosphorescent light seen hovering over marshy ground
    ignis lambens
    see ignis fatuus
    incalescent
    becoming hot or warm
    infernal stone (perhaps also infernal salt)
    lunar caustic, fused silver nitrate, a styptic substance
    Jesuits bark
    the medicinal bark of cinchona, a Peruvian tree, introduced into Europe by the Jesuit missions in South America
    keseph
    Boyle's code word, appearing under a variety or related spellings, for 'silver', from transliterated Hebrew (see Principe, Alchemical Secrecy)
    lapis amianthus
    asbestos
    lapis Armeneus
    'Armenian stone', a blue carbonate of copper esteemed as a cordial
    lapis calaminaris
    calamine stone, corrupted form from Latin cadmia, zinc ore, used in medicine since antiquity, mainly for the healing of ulcers
    lapis haematites
    'haematite stone', see bloodstone
    lapis nephriticum
    'kidney stone', a compact variety of amphibole, the less valuable variety of jade, which was worn as a remedy for kidney diseases.
    lapis ossifragus
    'osprey stone', another name for osteocolla (q.v.)
    laudanum
    a remedy made from opium
    lead, glass of
    glass made with a large amount of lead oxide
    lead, mercury of
    i.e., the putative vaporous or liquid component of lead
    lead, sugar of
    lead acetate, made by dissolving lead oxide in vinegar
    lignum nephriticum
    'nephritic wood', so called because an infusion of it helped relieve diseases of the kidney and bladder
    lignum rhoddi
    candle wood
    litharge
    lead oxide
    lixivium
    water impregnated with alkaline salts extracted by washing or dissolving a substance, often wood ashes
    London treacle
    an antidotal medicine like Venice Treacle and Mithridate (q.v.), made from hartshorn, citron, sorrel, peony, basil and many other ingredients
    ludus
    a mineral purportedly able to dissolve the stone (renal or urinary), mentioned by Paracelsus and adopted by his followers. J.B. van Helmont claimed that ludus, when calcined and dissolved by the alkahest, produced the most powerful remedy against renal calculi
    lues
    plague or pestilence, especially syphilis
    luna cornea
    'horny moon', horn silver (q.v.)
    luna fixa
    'fixed moon', a metal that has the weight and chemical properties of gold, such as resistance to nitric acid, but lacks its gold colour (see Laurence M. Principe, the Aspiring Adept (Princeton, 1998), p. 81n).
    luna, lunae
    of or pertaining to silver (from that metal's association with the moon)
    magistery
    a concentrated essence, or the residuum obtained by precipitation from an acid solution. In Paracelsian chemistry, a preparation of any material in which there is no separation of parts, but rather the reduction of the entire substance into a new form
    manipulus
    'handful', a measure used in medicinal preparations
    martis, martial
    of or pertaining to iron (from iron's identification with the planet Mars)
    menstruum
    'solvent', a term popularized by the medieval alchemists of the Lullian school and employed by van Helmont and many others
    menstruum peracutum
    a solvent developed by Boyle himself, made by distilling aqua fortis with butter of antimony (antimony trichlordie); Boyle claimed that it could volatilise gold and transmute a portion of that metal into silver. See Laurence M. Principe, The Aspiring Adept (Princeton, 1998), pp. 80-6.
    mercurius dulcis
    'sweet mercury', i.e. calomel, mercurous chloride; also known as sweet sublimate. It was used as a laxative or purgative
    mercurius sublimatus corrosivus
    mercury sublimate, mercuric chloride, a poisonous white powder prepared by subliming mercury, vitriol and common salt. It was also known as corrosive sublimate, white sublimate, or sublimate and was used in various preparations to cure venereal disease
    mercurius vitae
    'mercury of life', antimony oxychloride, a poisonous and violently emetic white powder made by precipitating butter of antimony (q.v.) with water; later known as algaroth, or pulvis Algarotti
    Mercury
    the heavy, fluid and metallic 'principle' present in all metals and other substances; the goal of much alchemical practice was to isolate and purify the Sulphur (q.v.) from the Mercury of any given metal
    mercury, running
    a liquid mercury, either the element (Hg) or the principle, as above
    mercury precipitate, mercurius precipitatus (corrosivus)
    mercuric oxide, a poisonous red powder; used as an application to wounds and ulcers; also known as red precipitate, precipitate per se, or precipitate
    mercury sublimate, mercurius sublimatus (corrosivus)
    mercuric chloride, poisonous white powder prepared by subliming mercury, vitriol and common salt; used in various preparations to cure venereal disease; also known as corrosive sublimate, white sublimate, or sublimate
    mineral bezoardick
    see bezoardum minerale
    minium
    red lead oxide, made by roasting lead or litharge (lead monoxide) in air; also known as red lead
    Mithridate
    a compound substance consisting of myrrh, saffron, ginger, cinammon, spikenard, and several other odoriferous spices and resins, and used as a universal antidote; also known as the Mithridate of Damocrates, Venice treacle
    mundick
    a name given by Cornish miners to iron pyrites and pyrites in general
    negirus/negerus/nigerus
    Boyle's code word, appearing under a variety of variant spellings, for 'mercury' (see Principe, Alchemical Secrecy)
    oculi cancrorum
    'crabs' eyes' (q.v.)
    offa alba
    a white precipitate formed by mixing spirit of urine (ammonium carbonate solution) with spirit of wine. See W.R. Newman, Gehennical Fire (Vambridge, MA, 1994), pp. 182-30.
    oil of sulphur (per campanam), oleum sulphuris per campanam
    see sulphur, spirit of and per campanam
    oil of tartar (per deliquium)
    see tartar, oil of and per deliquium
    oil of terebinth
    oil derived from the turpentine tree. It was used as a diuretic
    oil of vitriol
    see vitriol, oil of
    oleum philosophorum
    literally, oil of the philosophers; often referring to the substance prepared by soaking brick dust in olive oil and distilling
    oleum juniperi
    'oil of juniper', an essential oil derived from the distilled leaves and tops of the Eurasian juniper (Juniperus sabina); thought to open obstructions in the uterus
    oleum nardinum
    'oil of nard', prepared from the roots and leaves of nard and highly regarded as a diuretic.
    oleum succini
    oil of amber
    oleum sulphuris per campanam
    see sulphur, oil of and per campanam
    oleum tartari per deliquium
    see tartar, oil of and per deliquium
    oleum terebinthati
    oil derived from the turpentine tree. It was used as a diuretic
    oleum vitrioli(um)
    oil of vitriol, concentrated sulphuric acid
    orpiment
    a bright yellow mineral, the trisulphide of arsenic, used as a pigment and in chemistry
    osteocolla
    a deposit of carbonate of lime forming an incrustration on the roots and stems of plants, used as a treatment in setting broken bones/
    paz
    Boyle's code word for 'gold', based on the Hebrew for 'refined gold' (see Principe, Alchemical Secrecy)
    per campanam
    lit. 'by means of a bell', a method of preparing oil of sulphur by suspending a glass bell jar over a dish of burning sulphur and collecting the liquid which condensed on the walls of the jar
    per deliquium
    a hygroscopic salt was said to 'run per deliquium' when it changed from solid to liquid by extracting water from the atmosphere
    Peruvian balsam
    the balsam of Peru was obtained by boiling twigs of the yroxylon Peruvianum in water. It was used as an expectorant
    pilulae lunares
    'lunar pills', silver pills, made from silver dissolved in nitric acid, evaporated into crystals and mixed with a solution of nitre in water; used for dropsy and headaches
    pilulae Ruffi
    Rufus' pills, made of myrrh and aloes, said to have been invented by Rufus of Ephesus (c. 10 A.D)
    plaster of Paracelsus
    styptic plaster, containing oil, myrrh and litharge amongst its ingredients
    pompion
    pumpkin
    porcupine stone/ 'lapis porcinus'
    the bezoar steon found in the gall of the Indian porcupine; it has an intensely bitter taste, and was thought to be a universal antidote
    pp
    'praeparare', to prepare
    precipitate (as a specific chemical substance)
    see mercury precipitate
    precipitate per se
    see mercury precipitate
    pugil
    'a pinch'; an eighth part of a handful (manipulus)
    pulvis of Joannes de Vigo
    powder containing mercury, from Giovanni da vigo (1450-1525), Italian surgeon
    pyrethrum
    the plant Anacyclus Pyrethrum, the pungent root of which is used in medicine
    quatrum
    Boyle's code for 'lead' (see Principe, Alchemical Secrecy)
    red precipitate
    see mercury precipitate
    regulus
    a lump of metallic material produced by the reduction of metallic materials in the fire; usually referring specifically to metallic antimony
    regulus antimonii, regulus of antimony
    see antimony, regulus of
    regulus martis
    'regulus of Mars', metallic antimony, reduced from its native sulphide ore by the use of iron (the name alludes to the traditional association of iron with the planet Mars)
    regulus martis stellatus
    'stellate regulus of Mars', regulus martis (q.v.) whose surface is covered with a striking crystalline pattern resembling a star
    roch-allom
    double sulphate of aluminum and potassium, found efflorescent on the surface of bituminous schists
    Roman vitriol
    iron sulphate
    saccharum saturni
    see lead, sugar of
    sal armoniac
    a mixture of ammonium salts, predominantly ammonium chloride
    sal commune
    common table salt, sodium chloride
    sal gem
    rock salt, sodium chloride in its native mineral form, found as crystals in the earth
    sal prunellae
    a salt (usually potassium carbonate) prepared by casting a small burning coal (prunella) into melted nitre; used medicinally to soothe the throat
    sal tartari
    see tartar, salt of
    salt of cornu cervi
    a volatile salt distilled from hartshorn (q.v.); generally ammonium carbonate
    salt of tartar
    potassium carbonate, prepared by the calcination of tartar
    salt of urine
    term applied to all ammonium salts, especially those isolated from urine
    sandarach
    realgar, arsenic sulphide, a red lustrous mineral used as a pigment
    saturni
    of or pertaining to lead (from that metal's association with the planet Saturn)
    scoria
    slag or dross remaining after the smelting of a metal from its ore
    searce, searced
    sieve, sieved
    secundinae
    afterbirth, the placenta with the membranes and umbilical cord
    seed-lac
    see gum-lac (q.v.)
    semen dauci
    see daucus
    sperma ceti
    a fatty substance found in the head of the sperm-whale and some other whales; it was applied outwardly against ulcers
    spirit of blood
    a volatile liquid prepared by the destructive distillation of blood
    spirit of hartshorn
    an aqueous solution of ammonia obtained from the dry distillation of hartshorn
    spirit of nitre
    nitric acid
    spirit of salt
    hydrochloric acid
    spirit of sulphur
    an acidic fluid (largely sulphureous and sulphuric acids) prepared by burning sulphur under a moistened bell jar (campana) and collecting the condensed fumes; also known as oil of sulphur or oil of sulphur per campanam (q.v.)
    spirit of urine
    an aqueous solution of ammonia and ammonium carbonate prepared by the gentle distillation of putrefied urine
    spirit of vitriol
    sulphuric acid made by distilling one of the vitriols, either iron or copper sulphate
    spirit of wine
    ethyl alcohol
    spiritus ardens Saturni
    'burning spirit of lead', a flammable distillate, predominantly acetone, prepared by the dry distillation of lead acetate
    spiritus cornu cervi
    spirit of hartshorn (q.v.)
    stellate regulus of mars
    see regulus martis
    stibium
    stibnite, antimony, used as an emetic
    sublimate, sublimatum corrosivum
    see mercury sublimate
    sugar of lead
    see lead, sugar of
    sugar of Saturn
    see lead, sugar of
    Sulphur
    the combustible and volatile 'principle' present in all metals and other substances; the goal of much alchemical practice was to isolate and purify the Sulphur from the Mercury (q.v.) of any given metal
    sulphur, oil of
    see sulphur, spirit of
    sulphur, spirit of
    an acidic fluid (largely sulphureous and sulphuric acids) prepared by burning sulphur under a moistened bell jar (campana) and collecting the condensed fumes; also known as oil of sulphur, oil of sulphur per campanam, oleum sulphuris per campanam or oleum sulphuris (q.v.).
    sulphur vivum
    native sulphur
    sulphur of antimony, sulphur antimonii
    see antimony, sulphur of
    sweet sublimate
    see mercurius dulcis
    syrup of violets
    see violets, syrup of
    tarras/ tarris
    a type of rock used for making mortar
    tartar, cream of
    tartar purified by crystallisation
    tartar, oil of
    (1) concentrated solution of potassium carbonate, made by allowing salt of tartar (potassium carbonate) to absorb atmospheric moisture (per deliquium), also known as oil of tartar per deliquium or oleum tartari per deliquium; (2) the empyreumatic oil distilled from crude tartar (normally potassium bitartrate)
    tartar, salt of
    potassium carbonate, or sal tartari (q.v.)
    tartar, volatile salt of, sal tartar volatile
    a highly sought-after Helmontian medicine, purportedly having great solvent powers, and good for the stone
    tartarus vitriolatus
    usually potassium sulphate; made by the reaction of salt of tartar with oil of vitriol
    terra Lemnia
    'earth of Lemnos', a type of terra sigillata (q.v.); Lemnian earth was renowned as an antidote to poison
    terra sigillata
    'sealed earth', a type of clay used medicinally for its astringent and sudorific properties
    terra Silesiaca
    aother term for terra sigillata (q.v.), 'sealed earth', a type of clay used medicinally for its astringent and sudorific properties
    terrella
    a spherical loadstone or magnet
    theriaca andromachi
    i.e. Venice treacle
    tin glass
    bismuth
    tincture of coral
    coral dissolved in a corrosive solvent, often vinegar
    tincture of gold
    aurum potabile (q.v.)
    treacle (theriac)
    an ancient polypharmaceutical preparation, especially an antidote against poisons. The Orvietan was a somewhat similar highly multiple preparation, considered a great remedy against venoms, poisons, and plague
    turbeth/turpith mineralis
    turpeth mineral, a hydrolysed form of mercuric sulphate, a lemon yellow powder used as an emetic, purgative and treatment for syphilis
    tutenag
    an alloy of copper, zinc and sometimes iron
    urinator
    a diver
    vagalus
    Boyle's code word for 'tartar' (see Principe, Alchemical Secrecy)
    veneris, venereal
    of or pertaining to copper (for that metal's association with the planet Venus)
    Venetian soap
    fine hard soap made from olive oil and alkali
    Venice glass
    a very fine kind of glass, originally manufactured at Murano, near Venice
    Venice treacle
    also known as treacle of Andromachus, a compound mixture consisting of a wide variety of ingredients which was used as a universal antidote
    vinca pervinca
    periwinkle, the common name of plants of the genus Vinca
    violets, syrup of
    a blue liquid, made from the flowers of violets, which changes to red with the addition of an acid substance and to green with that of an alkali
    Virginian snakeweed
    snakeweed is the plant bistort. The roots of the Virginian snakeweed were used against plague, pox and poison
    virgula divina, divinatoria
    a divining rod, with which miners claimed to discover where the ores of metals lay
    viride aeris
    the green 'rust' which forms on copper exposed to the weather
    vitriol, oil of
    concentrated sulphuric acid
    vitriol, spirit of
    sulphuric acid made by distilling one of the vitriols (either iron or copper sulphate)
    vitriolum martis
    'vitriol of Mars', iron sulphate (from iron's identification with the planet Mars)
    vitrum antimonii
    see antimony, glass of
    vitrum Saturni
    see lead, glass of
    white fluors
    'white flux', in mineralogy, a white mineral used as a flux in the melting and refining of metals; in medicine, the whites (q.v.)
    whites, the
    leucorrhea, a secretion of whitish or milky mucous from the membrane lining the uterus
    zahab
    Boyle's code word, appearing under a variety of related spellings, for 'gold', from transliterated Hebrew (see Principe, Alchemical Secrecy)




    The Wellcome Trust for the History of Medicine provided support for entering this text.

    This text is based on the following book(s):
    Michael Hunter. and Charles Littleton. , Glossary for the Work-diaries of Robert Boyle.