OBSTIPATION 



69 



and later on administer a sharp purgative, followed by the administra- 

 tion of drop-doses of tincture of nux vomica. 



The subcutaneous injection of such drugs as physostigmin, pilo- 

 carpine and arecoline are not, as a rule, satisfactory and barium chloride, 



Fig. 29. — Mode of administering a clj'ster. 



ichthlargan, tallianine are not to be advised, as their results are not at all 

 satifactory and at times actually dangerous to the animal. These latter 

 drugs are administered by intravenous injection into the saphena vein. 

 The vein is dilated by means of pressure and when filled, the hypodermic 

 needle is thrust into it, taking care the needle punctures the vein, which 

 will be indicated by a few drops of blood coming from the needle and con- 

 tinuing to drop as long as the pressure is kept on the vein. If it is the 



