A New Supplement...: G. Galls. gallic acid. Gall-stone. Garance blue. Gargarisma aeruginis. Gold purple. Green basilicon. Green pigments. Grey lotion. Gum sandarach. Gum senegal. Gypsum.

A New Supplement to the latest Pharmacopoeias of London, Edinburgh, Dublin, and Paris, Forming A Complete Dispendatory, Conspectus, and Dictionary of Medical Chemistry, Giving All the Old and New Names, Including the New French and American Medicines, and Poisons; with Symptoms, Treatment, and Tests; as Well As Herbs, Drugs, Compounds, Veterinary Drugs, With the Pharmacopoia of the Vetenary College, Nostrums, Patent Medicines, Perfumery, Paints, Varnishes, And similar articles kept in the Shops; With Their Compositions, Imitations, Adulterations, And Medicinal Uses, Being a General Book of Formulæ and Recipes For Daily Reference in the Laboratory and at the Counter.
Fourth edition, corrected, improved, and very much enlarged.
By James Rennie, M. A., Editor of the Quarterly Journal of Foreign Medicine; the Pharmacopeia Universalis; Author of a Conspectus of Prescriptions in Medicine, Surgery, and Midwifery; the Pharmacopeia Imperialis, &c. &c.
London: Baldwin and Cradock. 1837.
London: Thomas Curson Hansard, Paternoster Row.


GALÆ. L. E. D.P. Galls. Produced from Quercus infectoria, by the grub of the Diploplesis Gallæ, or Cynips quercifolia. The best galls are from Aleppo and Smyrna. Galls have no smell, but a strong astringent and austere taste.
Incompatible with the sulphate and other salts of iron, the acetate of lead, sulphates of copper and zinc, nitrates of silver and mercury, bichloride of mercury, potassio-tartrate of animony, carbonate of potass, lime water, infusion of Peruvian bark, and solution of isinglass and animal jellies, and with the mineral acids.
Good Galls are small, heavy, and bluish-grey, or olive coloured. The inferior sorts are larger, light, incline to white or red, and if examined narrowly, it will be found that the grub has eaten its way out, by a minute perforation, which always deteriorates their quality, and renders them hollow and powdery when broken.
Medicinally galls are powerfully astringent and tonic in doses of ge. x to Ej, twice, or oftener in the day, for internal hæmorrhage and diarrhoæ; or externally in gargles, injections, or ointments, such as that applied for piles.

GALLIC ACID, previously confounded with tannin and tannic acid, is procured by mixing powdered galls into a thin paste with water, exposing it to the air at 60° or 70° for four or five weeks, adding water to keep it moist; then press out the liquid and throw it away, boil the residue in water, filter when hot, and it will deposit gallic acids as it cools, which must be purified with animal charcoal. It crystallises in long silky needles. (Pelouze.)

GALL-STONE in the arts is a calculus found chiefly in the gall bladder of the ox. It is of a baeutiful golden yellow, more powerful than gamboge, and works well in water, but fades in the light. (Field.)

GARANCE BLUE, or Bleu de Garance. See Ultramarine. Laque de Garance or French lake is tinged with safflower, and is inferior to madder lake. (Field.)

GARGARISMA ÆRUGINIS. Verdigrise Gargle. Tkae 3ij of verdigrise liniment, 3j of honey of roses, 3vj of infusion of linseed; mix, and employ for foul ulcers of the throat, and tonsils. It is not a very safe medicament.

GOLD PURPLE. The purple precipitate of Cassius is a compound oxide produced by mixing solutions of gold and tin. In the arts it affords not a bright, but a rich and powerful colour of great durability. It is used in miniature and enamel painting, but is more expensive than madder purple. (Field.)

GREEN BASILICON. Mix 1bj 3/4 of yellow wax, 3viij of olive oil, 3ij of verdigrise.

GREEN PIGMENTS, in the arts are either native, or composed of various blues and yellows, such as ultramarine and yellow, the supposed fine green of the Italian masters; of Antwerp blue and gamboge; or of Prussian blue and Dutch or Italian pink. Chrome green, when native, is a pure oxide of chrome; when factitious, it is made with chromate of lead and Prussian blue, and called Brunswick green. Both these are fine and durable. Cobalt Green is also original, or prepared from cobalt blue and chrome yellow. Green bice and African green are preparations of copper. See Sap green; Scheele's Green; Mineral Green; Mountain Green; Prussian Green; Terreverte; Verdigris; and Verditer.

GREY LOTION is prepared by adding variable proportions, according to the case, of chloride of mercury to lime water. Used for soothing irritable sores.

GUM SANDARACH, or Gum Juniper, is used in powder, to prevent ink from spreading on parchment or bad paper, and also in making varnishes.

GUM SENEGAL is an inferior sort of gum arabic, which is clammy and tenacious, rather than dry and brittle. It is the strongest and tbest for dark colours in water-colour painting.

GYPSUM, or Paris Plaster, is the native sulphate of lime, and is much used in arts, and also to adulterate flour, it being tasteless, and not gritty in the mouth.