Class 2.—CHEMICAL AND PHARMACEUTICAL PRODUCTS.South Gallery.
[United
100
78 Humfrey, C., Farnham Place, Southwark — Inventorand Manufacturer.
Colours produced by the combination of fatty acidswith metallic oxides and peroxides. Candles and refinedfatty matters.
79 Dickson, George, & Co., 46 Dundas Street,Edinburgh —Manufacturers.
Medicinal cod-liver, ling-livei', and skate-liver oils.Used in cases of pulmonary consumption, asthma, lum-bago, rheumatism, glandular swellings, and all diseasesof a scorbutic or strumous nature.
[Cod-liver oil has been long employed in the arts, butits use in medicine is recent. It has been given very ex-tensively within the last two years in a variety of dis-eases. It appears to be principally efficacious in tuber-culous affections, in the treatment of which many otherremedies are often employed without success.—R. E.]
Cod-liver ointment. Ninety per cent, of the consti-tuents of the oil is contained in this ointment.
80 Brearey, War. Arthur, Douglas, Isle of Man —
Inventor.
Refined oil. Pure oleine, for watches, clocks, chrono-meters, fine machinery, and instruments; free from acidor mucilage; not affected by change of temperature, andhaving no chemical action on metals.
[For some purposes in the arts it is necessary to separateoil into its proximate constituents, elaine, or oleine andstearine. The former is the fluid portion, the latter thesolid part which separates, at low temperatures, from theoleine. The separation is effected by cold and pressure.—R. E.] _
81 Robertson, W., Banff , Scotland —Manufacturer.
Cod-liver oil, manufactured by the exhibitor. Ex-tracted by steam-heat, and rendered almost colourless,without the use of charcoal or any other decolourisingagent. Manufactured at the various fishing villages alongthe coast of the Moray Frith.
Skate-liver oil. Manufactured by the same process.This article is more difficult to obtain. Change of tem-perature scarcely affects it. By some it is preferred tocod-liver oil.
Sulphate of baryta and chloride of barium.
[Chloride of barium is a crystalline compound ofchlorine and barium, soluble in water. Its solution pro-duces a white insoluble precipitate of sulphate of barytain sulphuric acid and solutions of sulphate; hence itsuse as a chemical re-agent for the detection and quanti-tative determination of sulphuric acid in analysis.
Sulphate of baryta (permanent white), is a compoundof sulphuric acid and oxide of barium; artificially pre-pared, it is extensively used as a pigment for water-colouring, but has not sufficient body to be employed asan oil paint. The native sulphate of baryta is used as anadulterant of white lead paint.—W. D. L. R.]
82 Linklater, J., 5 Sidney Street —Producer.
Specimens of cod-liver oil.
83 Owen, Charles; Edinburgh —Manufacturer,
Specimens of pure cod-liver oil.
84 King, William Waudby, Soho Street, Liverpool —
Manufacturer.
Effervescent citrate of magnesia, manufactured by theexhibitor.
This article is exhibited as an agreeable and efficientsaline aperient, adapted for family use, for travellers andresidents in warm climates, and as an economical medi-cine in general. Mixed with cold water it forms a plea-sant effervescing draught equal to soda water or lemonade.
85 Burt, Stephen John, 26 Farringdon Street —
Proprietor.
Cantharides ( Cantharis vesicatoria), imported fromRussia .
Cantharidine , the active principle of the cantharides,alone, and in combination with alkaline and other bases.Cantharidine and potassa. Cantharidine and soda. Can-tharidine and lead.
[The Cantharis vesicatoria of pharmacy is an insect belong-ing to the order Coleoptera, or beetles. Sicily, Spain , andAstracan are sources of our supply. In the present instanceRussia has furnished the insect, and there is a large annualimportation from that country. The Russian insects arelarger than those of other countries. Cantharidine is ob-tained from an alcoholic tincture of the powdered insect,and possesses in an intense degree the blistering propertiesof the powdered cantharides.—R. E.]
86 Huskisson, J., W. & H., 77 Swinton Street,
Graffs Inn Road —Manufacturers.
Crystals of the following chemical substances :—
1. Bi-carbonate of soda.
2, 3. Rochelle salts, refined and unrefined.
4. Iodide of potassium.
5. The same, commercial.
6. Iodide of lead.
7. Bin-iodide of mercury.
8. Iodide purified.
9. 10. Tartaric acid and citric acid crystals.
11. Acetate of zinc.
12. Sulphate of potash crystals.
13. Purified sulphate of zinc.
14. Phosphate of soda.
15. Sulphate of iron crystals.
16. Carbonate of soda.
17. 18. Purified nitrate and bi-carbonate of potash.
87 Murray, Sir James, M.D., Monktovm, Dublin—
Inventor.
Bi-carbonate of magnesia, dissolved in distilled water;free from impurities. Specimen of fluid camphor andmagnesia. Carbonate of magnesia in crystals, a dentifrice.
88 Sturges, Joseph, Kettering — Inventor.Preparation for preserving the turnip plant from the
ravages of the fly.
[The turnip-plant often suffers in its earliest growth,from the attacks of a small beetle, called the Halticanemorum, which devours its cotyledon leaves, and thusarrests its further growth. A fine tilth and plenty ofgood manure generally ensure such a vigorous growth thatthe plant is enabled to throw out its second pair of leavesbefore any serious injury has been sustained.—J. W.]
A proposed remedy for the smut in wheat, and also apreventive from the ravages of the slug, grub, and wire-worm.
89 Ward, John, Pamelton, County Donegal — Producer.Specimens of kelp manufactured from sea-weed.
Iodine, muriate of potash, sulphate of potash, and alkali
salt; all manufactured from kelp.
90 Kent, James Henry, Stanton, near Bury St.
Edmunds —Inventor and Manufacturer.
Dried pharmaceutical indigenous plants, in glass ves-sels, the lower parts of which exhibit the plants preparedfor pharmaceutical purposes, and the upper portions ofsome of which display the botanical characters of theplants.
Powdered conium, digitalis, and other indigenous phar-maceutical plants.
Dried roots of indigenous pharmaceutical plants.
Dried immature poppyheads, and extract made fromthe same.
Specimens of pharmaceutical extracts, prepared fromindigenous plants.