110 MATERIA MEDICA. 



acts as a sudorific in the human body ; but 

 for the horse we do not know any medicine, 

 I believe, that is capable of exciting sensible 

 perspiration, or sweating, with any degree 

 of certainty ; though it is easily brought on 

 by violent exercise or immoderately warm 

 clothing, and sometimes happens spontane- 

 ously. Still, however, ipecacuana may pro- 

 mote the inseiiuble perspiration, like emetic 

 tartar ; and opium may be an useful addi- 

 tion to it. 



A mixture of opium, ipecacuana, and vi- 

 triolated tartar, one dram of the two first, to 

 one ounce of the last, forms the celebrated 

 Dover's Fozoder. f Compound Powder of Jpe- 

 mcuanaj which has been recommended by a 

 late veterinary writer. 



ISINGLASS. This is said to consist of 

 the dried membranes of the sturgeon, or 

 some fish resembling it; the mode of pre- 

 paration, however, is kept a profound se- 

 cret. When dissolved in water it forms a 

 strong mucilage ; which is an useful emol- 

 lient, and serves to sheathe the bowels, blad- 

 der, &c. when inflamed or irritated. 



IRISH SLATE. An earthy substance, 

 not used in veterinary practice. 



