RESPI1UTI0N. 



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 of the Rates of Respiration in Dif- 

 ferent Animals. (Thanhoffer.) 



1, fish; 2, tortoise; 3, adder ( in winter^: 4. boa-constrictor /in summer} ; . r >, frog; 6, alligator; 7, 

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

 piration; 7?iZ=-=aeep, n£i=> superficial respiration; A = abscissae; = ordinates. 



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

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



