One-sixth of a grain in each with gelato-glycerine basis. Useful in hay fever, sometimes combined with ¹⁄₁₂₀ grain of Sulphate of Atropine in each. =Injectio Cocainæ Hydrochloratis Hypodermica.= 1 in 20. _Dose._—2 to 10 minims. For sciatica and many local affections acts better than morphine. =Hypodermic Lamels= are prepared containing ¼ grain in each. =Lamellæ Cocainæ, Discs of Cocaine= (_Off._). Discs of gelatine, each containing ¹⁄₂₀₀ grain of hydrochlorate of Cocaine. These should be prepared in an atmosphere carefully freed from dust and germs of fungi and disease. Also prepared containing ¹⁄₅₀ grain in each, and in combination with Atropine, Homatropine, and Physostigmine. =Liquor Cocainæ Hydrochloratis= (_Off._) 10 per cent. SOLUTION OF HYDROCHLORATE OF COCAINE.[31] _Dose._—2 to 10 minims. Hydrochlorate of Cocaine 100, Salicylic Acid 1½, Boiling Distilled Water to produce 1,000 fluid parts when cold. [Footnote 31: This forms a stable 10 per cent. solution, which for the use of oculists may be diluted to a 2 per cent. solution, and still remain free from tendency to develop fungoid growths. The salicylic acid remains as free acid in the mixture, as with perchloride of iron it gives a more permanent violet coloration than the so-called salicylate of cocaine. The official solution may be used as an application for producing local anæsthesia or for hypodermic injection, for which purpose it is found to be unirritating. A solution up to the strength of 50 per cent. may be prepared in salicylic acid solution of the above strength, which is nearly saturated.] =Pastillus Cocainæ Hydrochloratis.= ¹⁄₂₀ grain in each (to ⅒ or ⅕ grain, or more if ordered). Useful in allaying irritation of the throat and hoarseness. They invigorate the vocal organs of singers and public speakers. =Pastillus Cocainæ et Morphinæ= contains ¹⁄₃₀ grain Cocaine and ¹⁄₆₀ grain morphine. Useful for coughs. =Pilula Cocainæ Hydrochloratis.= ⅕ grain in each (or more, if ordered), with sugar of milk and syrup _q.s._ to make a grain pill. =Tabloids of Hydrochlorate of Cocaine.= ⅒ and ⅙ grain each. Are prepared for hypodermic injection. =Trochisci Cocainæ Hydrochloratis.= ¹⁄₁₂ grain in each. Used for similar purposes to the pastils. =Cocainæ Salicylas.= _Dose._—⅕ to 1 grain or more. Is in minute snow-white crystals, slightly deliquescent, and is recommended for the use of oculists, as it forms a solution which keeps well. In spasmodic asthma the hypodermic injection of a good dose (6 grains) at the beginning, relieves the attack.—B.M.J. ii./86,117. =Dentifricium Cocainæ.= Phosphate of Calcium (dry), 2 ounces. Orris, in powder, 1 ounce. Myrrh, in powder, 30 grains. Mix, and add in solution:— Cocaine, 1½ ” Oil of Eucalyptus, 12 minims. Triturate well together and add ammoniacal solution of carmine, 15 minims. Mix well and sift.