MATERIA MEDICA AND THERAPEUTICS. 201 



acid are chemically incompatible ; physiologically, by general 

 stimulants and other special stimulants. Toxic effects are treated 

 by emetics, warmth, alcoholic stimulants, artificial respiration, 

 and morphine subcutaneously. 



Synergists. — Conium, physostigma, tobacco, opium, etc., in- 

 crease its effects when administered along with it. 



Physiological Actions. — A splendid nerve sedative, antispas- 

 modic and nerve depressant, paralyzing motility and sensibility 

 by central action on the spinal cord. It is also anaphrodisiac. It 

 lowers body temperature; is not irritating; effects of moderate 

 doses pass off in about 3 hours. 



Toxic Doses cause vertigo, drooping of eyelids, dilated pupils, 

 labored breathing and feeble heart drooping jaw, staggering 

 gait, great muscular weakness, general anaesthesia, sweating and 

 death by asphyxia due to paralysis of the muscles of respiration. 



Uses. — Is a very useful drug in exalted nerve function or in 

 any condition known as nervous excitability; contraindicated 

 when there is a weak heart. 



In Azoturia, gelsemium is the best drug to prevent or con- 

 trol its delirium ; start in with 2 dr. doses, when given every 2 or 

 3 hours, if the animal is quite excited give J4 oz. dose, and com- 

 bine it with Fl. Ex. hyoscyamus j4 oz. In cerebrospinal men- 

 ingitis, gelsemium in small repeated doses 1 or 2 drs. every 2 

 hours. It is indicated in delirium from any cause, in coughs of 

 convulsive or spasmodic character. Gelsemium is used a great 

 deal in the South in remittent fever ; it is also used in irritable 

 condition of the bladder ; in tetanus give gelsemium for its sooth- 

 ing influence, in 2, 3 or 4 dr. doses; good for relieving post 

 partum pains. 



ARNICtE— ARNICA. 



arnicas FivORES — Arnica Floivers. 

 arnicae radix — Arnica Root. 

 Preparations. 



Extractum arnicae radicis — Extract of Arnica Root. 

 Dose. — Horse, 15 to 45 or 60 grs. ; dogs, l / 2 to 3 grs. 

 Extractum arnicas radicis Eluidum — Fluid Extract Arni- 

 ca Root. 



