458 MEDICINES. 



and lose their virtue, from the decomposition of the vegetable 

 Tiatter. 



The infusion of chamomile is advantageously used instead of 

 water in compounding a mild tonic drench. The infusion of 

 catechu is uselul in astringent mixtures ; that of linseed is used 

 instead of common water in catarrh and cold ; and the infusion 

 \)f tobacco in some injections. 



Injections. — See Clysters. 



Iodine. — This substance has not been long introduced intr. 

 veterinary practice. The first object which it seemed to accom- 

 plish, was the reduction of the enlarged glands that frequently 

 remain after catarrh, but it soon appeared that it could reduce 

 almost every species of tumor. Much concerned in the first in- 

 troduction of iodine into veterinary practice, the writer of the 

 present work bears willing testimony to the zeal and success 

 of others, in establishing the claims of this most valuable medi- 

 cine. Professor Morton has devoted much time and labor to the 

 different combinations of iodine, and they are described at length 

 in thq useful " Manual of Pharmacy." He gives the formulae of 

 the composition of a liniment, an ointment, and a tincture of 

 iodine, adapted to different species and stages of disease. He 

 next describes the preparation of the iodide of potassium — the 

 combination of iodine and potash — and then the improvement on 

 that under the name of the diniodide of copper — the union of two 

 parts of the iodide of potassium with four of the sulphate of 

 copper. 



The action of this compound is an admirable tonic and a stim- 

 alant to the absorbent system, if combined with vegetable tonics, 

 and, occasionally, small doses of cantharides. Professor Spooner 

 and Mr. Daws applied this compound, and with marked suci-vss, 

 to the alleviation of farcy, nasal gleet, and glanders. It is pleatj- 

 ing to witness these triumphs over disease, a little while ago so 

 unexpected, and now so assured.^ 



Iodine Ointment. — See under Iodine. 



Iron. — See Ferrum. 



James's Powder. — See Pulvis Antimonii Compositus. 



Japan Earth. — See Catechu. 



Juniper, Oil of. — This essential oil is retained because it has 

 some diruetic property, as well as being a pleasant aromatic. It 

 frequently enters into the composition ot" the diuretic ball. 



* Note by Mr. Spooner. — Iodine is employed in various foims. In that of 

 iodide of potassium it is best administered internally, as a promoter of ab- 

 sorption. Combined with the sulphate of ropper it forms a powerful and 

 useful tonic ; whilst in the form of iodide of mercury, and combined with 

 lard or palm oil, it becomes a powerful blister, and a useful promoter of 

 absorption 



