VETERINARY MATERIA MEDICA. 



G39 



Iodine.— Among horses this substance has not long made 

 its appearance; but as a remedy for bronchocele it has 

 been some years employed on dogs. It is now given to 

 horses to promote a solution of the glandular swellings 

 which frequently remain after catarrh. In daily doses of 

 half a drachm to a drachm, it seems to have much re- 

 solving power, not over these only, but also over all 

 other glandular enlargements. It appears also to possess 

 tonic and alterative properties combined. It is almost 

 a specific for profuse stahng. Its purity may be tested 

 by its becoming soluble in alcohol, and by evapo- 

 rating entirely by heat. In Mr. Morton's Manual of 

 Pharmacy, several preparations of it are given, with 

 valuable notices thereon, which we recommend to con- 

 sideration. It is by some veterinarians very highly 

 thought of; we particularly allude to the iodine of potas- 

 sium, which may be administered to the horse in doses 

 from one to two drachms : to cattle it may be given m 

 the same quantities. An ointment, ung. potassi iodidi, 

 is also an active dispeller of glandular enlargements. Its 

 effects, we may add, are often slow, but seldom unavail- 

 ing. The iodide of lead is an excellent appUcation 

 rubbed upon swellings ; so also is the iodide of sulphur for 

 obstinate skin diseases. 

 Iron.— Almost all the preparations from this metal prove 

 excellent tonics to the horse. Iron filings may be given 

 in the corn or a mash, in doses of two or three ounces 

 once or twice a day. The rust, or carbonate (ferri 

 carbonas) , is another form, and proves useful when given 

 as the former, in doses of one ounce to two. _ Green 

 vitriol, or copperas, as the sulphate of iron is called 

 {ferri sulphas), is also given as a tonic, and some think 

 it a prefefiable preparation, on account of its saline 

 admixture. It is usually given in a daily dose of one 

 drachm or two drachms : it has more lately been given 

 with some success in that form of glanders which has 

 been termed " insidious." All the preparations of iron 

 appear to produce most effect when combined with 

 aromatic bitters: they should not be united with any 

 alkah, consequently ought not, in chemical strictness, to 



