ARGENTUM — SILVER 415 



M. Pt. Pasta. To be applied upon gauze or packed into a fistula 

 and left two or three days. This is the "so called" Ger- 

 man caustic. Very similar to a proprietary veterinary rem- 

 edy called dynamite. 



Fouls in Sheep and Cows. 



^ Zinci Chloridi 3 j 



Aquse S vj 



M. Ft. Solutio. Use as an injection once daily for 3 or 4 days, 

 then reduce three times. 



ZINCI STEARAS — ZINC STEARATE 



This salt occurs as a fine white bulky powder, tasteless and 

 having a faint, characteristic odor. It is insoluble in water, alco- 

 hol or ether. Its action and uses are similar to the oxide. It may 

 be used in 50 per cent, ointment or as the powder. 



ZINCI VALERAS — ZINC VALERATE 



Zinc valerate occurs as white, pearly scales, or as a white powder 

 having the odor of valeric acid, and a sweetish astringent and metal- 

 lic taste. It has been used as an antihysteric in human medicine and 

 for chorea of dogs but is of questionable, if any, value. Dose for 

 dogs, gr. j — iij ; 0.06—0.18. 



Zinc Phenolsulphonate is discussed under phenol, p. 452. 



ARGENTUM — SILVER 



Silver is absorbed very slowly. Furthermore it is reduced to the 

 inactive state as soon as it enters the body, according to Jacobi, so, 

 that it cannot lead to general poisoning and the only evidence of its 

 absorption is a dark discoloration of the skin after prolonged ad- 

 ministration (Argyrism). This stain is the result of the deposition 

 of metallic silver in the connective tissue of the corium, sweat glands, 

 smooth muscle, etc. It is rarely seen in animals. 



The effects produced by silver when introduced intravenously 

 differ from those caused by other metals mainly in the prominence 

 of nervous symptoms. These nervous distiirbances are paralytic and 

 mainly peripheral in origin. The paralysis is largely motor begin- 

 ning with that of the posterior extremities, followed by some de- 

 pression of the respiratory center, stimulation of the vasomotor 

 center followed by paralysis. There are no therapeutic indications 

 except for its local action. The cyanide, oxide and nitrate are offi- 

 cial but the nitrate is the one most used. 



