EESPIKATION. 



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 winter); 4, boa-constrictor Cm summerl ; 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; mZ-=deep, ill — superficial respiration ; A = abscissai; O = ordinates. 



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

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



