RESPIRATION. 



583 



even when frightened be raised from fourteen to forty-five, thus showing 

 the effect of mental impressions. So, also, the lion has a normal respira- 



FIG. 255. GRAPHIC REPRESENTATION OP THE RATES OF RESPIRATION IN DIF- 

 FERENT ANIMALS. (Thanhoffer.) 



1, fish; 2, tortoise:- 3, adder (in winterl : 4, boa-constrictor (in summer); 5, frog: 6, alligator; 7, 

 lizard; 8, canary-bird ; 9, adult dog; 10, rabbit : 11, man; 12, dog; 13, horse. I = inspiration : E = ex- 

 piration; m/ = deep, n/= superficial respiration; A = abscissse; Coordinates. 



tory rate of twelve to fourteen movements in the minute, and when 

 excited has been found to breathe seventy times a minute. In insects 



