In tetanus give one to two drachms of the extract two or three times daily; in paralysis of the throat of tetanus the fluid extract combined with soap liniment or used alone externally; in cerebro-spinal meningitis, belladonna and ergot alternated with aconite is rational treatment, conjoined with the external treatment. It allays irritations of the bladder, rectum, and uterus, especially if combined with cannabis indica. In contraction or rigid os the extract applied directly, quickly relaxes and allows parturition; it is well to see if this is necessary before giving ergot. Used extensively in examinations and diseases of the eye. Atrophine sulphate is used locally to dilate the pupil, assisting in the detection of cataracts or other disorders of the eye and testing the condition of the refracting media; for dilating pupil use a solution of four grains of the atrophine to one ounce of distilled water; a few drops are placed into the eye, for inflammation of the eye with great irritation; belladonna may be combined with cocaine; in iritis. ANTIDOTE.--In poisoning, tannic acid should be used. BENZOINUM--BENZOIN A balsamic resin obtained from styrax benzoin dryander, and another unidentified species of styrax. It contains benzoic acid in the proportions 12 to 20 per cent to which it probably owes its action. HABITAT.--Southern Asia. PROPERTIES.--In pebble-like bodies or tears, slightly flattened, straight or curved, yellowish to rusty-brown externally, milky-white on fresh fractures internally. Odor agreeable, balsamic; taste slightly acrid. It is almost wholly soluble in five parts of moderately warm alcohol, and in solutions of the fixed alkalies. When heated it gives off fumes of benzoic acid. CONSTITUENTS.--Benzoic acid, cinnamic acid; resins and a volatile oil. PREPARATIONS ADEPS BENZOINATUS--BENZOINATED LARD Made by melting lard 1,000, with benzoin 20, and straining; used as an ointment itself, and as a base for other ointments. TINCTURA BENZOINI--TINCTURE OF BENZOIN Made by maceration of benzoin 200, in alcohol; filtration and addition of alcohol to make 1,000. DOSE.--Horses and cattle, ¹⁄₂ to 1 oz.; sheep and pigs, 2 to 4 drs.; dogs, 30 to 60 ms. TINCTURA BENZOINI COMPOSITA--COMPOUND TINCTURE OF BENZOIN Commonly known as Friar’s Balsam. Benzoin, 100; purified aloes, 20; storax, 80; balsam of tolu, 40; alcohol to make 1,000. Made by digestion and filtration. ACIDUM BENZOICUM--BENZOIC ACID DERIVATION.--Obtained from benzoin by sublimation, or artificially prepared. PROPERTIES.--White feathery crystals of a peculiar, agreeable odor, and warm acidulous taste, sparingly soluble in cold water (1 to 500), more soluble in boiling water, 1 in 15, and in 2 parts of alcohol; borax renders it more soluble. INCOMPATIBLES.--Alkalies, ammonium carbonate. DOSE.--Horses and cattle, 2 to 4 drs.; sheep and pigs, ¹⁄₂ to 1 dr.; dogs, 5 to 15 grs. AMMONII BENZOAS--AMMONIUM BENZOATE