THE CIRCULATION OF THE BLOOD 105 



inject toward heart enough of the solution to make 2 grm. per kilo 

 animal; ligate below needle point and withdraw needle. 



4. Observations. (1) What is the effect of adrenalin applied 

 locally? 



(2) What is the effect upon the peripheral circulation of adrenalin 

 injected intravenously ? 



(3) Is the rate or apparent force of the heart modified by adrenalin ? 



(4) Is the blood pressure modified; if so, how may the change 

 be accounted for? 



