Till \l>kl \ \l. QLANDS 



741 



posed i" contain epinephrine, little chance of error is likely to I"' in- 

 curred; thai is, if the solution produces inhibition of the intestine along 

 with augmentation of the uterus, it musl contain epinephri 



3. The fresh carotid artery of thi sheep. A ring cut from the art 

 is suspended in oxygenated Locke's solution and attached below to a 



Pig, l''i Tracing • nephrine on the intestinal '. on the 



arterial blood i>n - preliminary addition of barium to the nutritive fluid may be 



garded, > < Prom J 



small hook and above to a loaded muscle lever, by which th>' contraction 

 of the muscle fibers can 1"' magnified. Epinephrine causes the muscle 

 contract, I >u t the tesl is no1 so sensitive as the foregoii ally in 



the presence of blood serum, because the pressor substances therein con- 

 tained also causr contraction. Blood plasma does not contain the r 

 sor substances, so thai oxalated plasma should be used in pi um 



