IODIDE OF POTASSIUM. 239 



hj sleep, from wliicli the person recovers without any 

 unpleasant effects. Experiments instituted by the writer 

 with this medicine upon horses, do not warrant its intro- 

 duction into the list of horse and cattle medicines. 



Henbane. — Hyoscyamus Niger. — An extract and a 

 tincture is ordered to be kept in the drug stores. Hyos- 

 cyamus is indicated in all cases where belladonna is in- 

 dicated. It has, however, little effect upon animals 

 chewing the cud. In horses, it is occasionally given to 

 relieve cough and irritation of the throat or windpipe. 



Dose. —For horses, one to two drachms of the extract 

 is the dose, and should be given, rubbed down in a little 

 cold water, and repeated several times in the day. Bet- 

 ter drugs, and less expensive ones, answer a better pur- 

 pose. This medicine used formerly to be relied upon for 

 the cure of insane persons, but is now almost discarded 

 for that purpose. 



Iodine. — A chemical preparation manufactured from 

 kelp or sea-weed, and used both rightfully and wrong- 

 fully, in many diseases. However, iodine itself is, I 

 think, of little value as a medicine, but when united che- 

 mically with iron, copper, mercury, lead, arsenic and po- 

 tassium, it certainly is one of the most useful and indis- 

 pensable of medical agents, when administered internally, 

 and applied externally. 



Dose. — Iodine is given to the horse and the ox in from 

 twenty to forty grains : for do>s, three to six grains. An 

 ointment of iodine is made as follows : — Take one part of 

 iodine to eight parts of lard. This is a good ointment to 

 apply to soft swellings on the body of the horse, when 

 applied by rubbing with the hand. 



Iodide of Potassium. — Hydriodate of Potash. — 



