I4 2 SYNOPSIS OF VETERINARY 



PHENACETINUM—PHENACBTIN. 



Dose. — Horses and cattle, 2 to 4 drs. ; dogs, 2 to 10 grs. re- 

 peated every 3 or 4 hours ; seldom used for the large animals. 



Characters. — Colorless, tasteless, odorless, glistening scaly 

 crystals, sparingly soluble in cold water, more freely in boiling 

 water, alcohol and acetic acid. 



Actions. — I^ike acetanilid and antipyrin, it lowers tempera- 

 ture and diminishes pain, and is hypnotic, its action is less rapid, 

 but more prolonged and less liable than the others to produce 

 collapse, it slows the pulse and relieves respiratory difficulty, the 

 effects continuing for 4 hours. 



Uses. — In high fevers or any febrile condition. In rheuma- 

 tism and influenza use phenacetin and salol combined. In dis- 

 temper of dogs ; Phenacetin, 5 grs., salol 5 grs. every 3 or 4 

 hours, with stimulants. 



I ft ACETANIUDUM— ACETANILID. 



Known by the trade term AntiFebrin, a derivative of aniline, 

 best of this class for veterinary use on account of its cheapness 

 and satisfactory effects, a white crystallized or amorphous powder, 

 odorless, a slight characteristic but not disagreeable taste, soluble 

 1 part in 50 of hot water (at 105 F.) readily soluble in alcohol 

 3 to 5, and in aromatic spirits of ammonia. 



Dose. — Horse, 1 to 3 drs. ; sheep, y 2 to 1 dr. ; cattle, 2 to 4 

 drs. ; dogs, 2 to 10 grs. repeated every 3 or 4 hours. 



Actions. — It is a powerful antipyretic, acting very promptly, 

 is mildly diaphoretic, slightly antiseptic and diuretic. is_not ir- 

 ritating' or nauseous ; is more powerful than antipyrin, and its 

 effects are more lasting ; is anodyne, lowers temperature by pre- 

 venting waste and heat production, by increasing radiation and 

 by depressing the activity of the calorefacient centers. Ace- 

 tanilid affects the temperature in about 1 hour and its effects are 

 maintained for about 6 hours. Antipyrin manifests its action in 

 about 30 minutes and only lasts for 2 hours. 



Uses. — Acetanilid is used in all febrile diseases, chiefly in 

 thermic fever (sun-stroke )and rheumatism, but in the latter 

 salol, salicylic acid and salicylate of soda are preferred. Anti- 



