304 VETERINARY MATERIA MEDICA. 



ume is spoken of in connection with H^O^ it means 

 capacity for holding 0. One pint or unit of H^O one 

 volume strong, contains one pint or unit of O ; while 

 a fifteen-volume solution contains fifteen units of O. 

 When fresh and in good condition H^Oj is one of the 

 most powerful oxidizing agents known, and in con- 

 tact with pus forms a thick, white foam. Dose : H., 

 fl. |ss.-ij.; D., fl. 3ss.-i. Should be well diluted 

 with water, milk, or gruel. Small repeated doses are 

 preferable to a larger single dose. 



It is given in choleraic complaints, dyspepsia, diar- 

 rhoea, and intestinal disorders accompanied by a ten- 

 dency to fermentation and flatulence. It checks fer- 

 mentation and stimulates the gastric and intestinal 

 fluids to a normal action. Diseases of the throat, na- 

 sal passages, and lungs may be treated with a spray 

 of HjOj, 1 part in 5. to 15 of water. It is used also 

 locally to wounds, sores, ulcers, fistulse, punctured 

 wounds of the feet, abscesses, and also in dentistry. 



Piperazinum (syns. — Pyrazine hexahydride, 

 di-ethylenediamine, piperazidine, ethylene-imine) 

 — C,Hj„N'j — is a synthetical basic compound, formed 

 by the action of ammonia upon ethylene bromide, and 

 occurs as a white, crystalline powder, readily soluble 

 in water. It liquefies when exposed to air, from 

 which it greedily absorbs H^O and CO^. With uric 

 acid it forms the most soluble known urate, requiring 

 but 50 parts of water for its solution, while lithium 

 urate requires 368 parts of water to dissolve it. Pi- 

 perazin is non-toxic, non-irritant to mucous mem- 

 branes, is readily absorbed from the stomach, and 



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