MOTOR DEPRESSANTS. 151 



Extractiim Aconiti Fluidum, fluid extract of aco- 

 nite. Dose: H., TTi v.-xx. ; D., TTi ^i. 



Tinctura Aconiti^ U. S. P., tincture of aconite 

 (thirt^^-five per cent.). Dose: H., 1U xv.-xl. ; D., 

 ■nt ss.-iij. 



Tinctura Aconiti^ Fleming's^ Fleming's tincture 

 of aconite (seventy-nine per cent.)- Dose: H., 

 TT[ viij.-xv. ; D., TTt ^-f. Now almost obsolete and 

 not so reliable as the fluid extract. 



Aconitina^ aconitine. White, flat crystals, of a 

 feebly bitter taste; soluble in alcohol, ether, and 

 chloroform; incompatible with alkalies, tannin, and 

 mercurial salts. Difficult to obtain of a constant and 

 reliable strength. The most reliable are Squibb's ni- 

 trate of aconitine and aconitinum purum, Merck. 

 Used hypodermically on the horse in doses of gr. 



30 20* 



Oleatam Aconitince, oleate of aconite (two per 

 cent.) . For local use only. 



Physiological Action. — Aconite and its prepa- 

 rations are sensory, cardiac, respiratory, and spinal 

 depressants of great activity and power; also antipy- 

 retics, diaphoretics, and diuretics, its antipyretic ac- 

 tion being due to its sedative action upon the heart 

 and respiration ; hence its use is indicated at the off- 

 set of acute inflammatory diseases. Small doses, 

 given upon the tongue, soon cause a sensation of 

 numbness and a persistent tingling of the lips and 

 tongue. Full doses cause a feeling of constriction of 

 the fauces, irritation of the gastro-intestinal mucous 

 membrane, with increased secretion, sometimes with 



