250 Journal of the Department of Agriculture. — Sept., 1922. 



or generally at the drinking- place, where, in their eagerness to get 

 water, the stronger members of the herd push the weaklings out ot 

 the way. In some cases the accidents that occur, such as falls, are 

 due, not to Aveakness, but to blindness, and even in such advanced 

 cases treatment may bring about recovery. 



Method of Preparation of Tartar Emetic Solution. — Doses : 

 Adult cattle, one and a half grammes given daily on five consecutive 

 days. At this Laboratory, larger doses, two grammes, and even two 

 and a half grammes, are given to large oxen, and up to the present 

 time no harmful results have been Jioted. Donkeys may be given 

 one gramme to one gramme and a half. Dogs of 25 lb. weight take 

 100-125 milligrammes of the drug with safety. Horses and mules 

 receive the same dose as bovines. Regarding repeated administra- 

 tion, one must necessarily use some discretion, for should an animal 

 show alarming symptoms after an injection, then either the follow- 

 ing inoculation should be postponed for a day or two or the dose 

 decreased : — 



The tartar emetic powder (which is obtainable from all 

 cliemists) is placed into a bottle containing normal saline 



SE.\TS of IX.JKCTIOX. 



Left side of ueck suowiug positiou 

 of jugular vein. 



Inner aspect right hind limb 

 of dog showing course of 

 saphena vein. 



solution which has been prepared beforehand by adding ordinary 

 coarse salt to rain-water in the proportion of 1 teaspoonful of salt 

 to 1 pint of water. For each 1 gramme of tartar emetic measure ofP 

 20 c.c. of the saline solution, thus, in preparing five doses of li 

 grammes each, one would take 150 c.c. of liquid. Place a plug of 

 cotton Avool or clean muslin in the mouth of the bottle, which stands 

 in a saucepan containing cold water. Bring the water in the sauce- 

 pan to boiling point, and allow this to boil gently for half an hour. 

 After this interval the tartar emetic solution may be considered 

 sterilized, and the bottle moy be removed from the saucepan and 

 allowed to cool lo body temperature. If particles of the powder are 

 still visible at the bottom of the bottle, a little shaking will cause it 

 to dissolve. In inoculation of the dog, 2A-5 c.c. of the normal saline 

 solution is advised. 



Seat of Injection. — The safest and easiest channel for administra- 

 tion is the intravenous, the jugular vein in the case of large animals, 

 and the saphena vein in dogs. The sketches above show the sites 

 usually selected. 



