478 



APPENDIX 



necessary. With the watch count the number of respirations per 

 minute. 



By analysis of the meaning of the different parts of the pneumogram 

 note the characteristics of the respiratory process in this animal. Observe 



FIG. 264 



A 



A 



The Anolis stethogram. A slightly apneic type of the breath-movements of Anolis. Observe 

 the slight pause after inspiration, but that there is none between expiration and the next inspi- 

 ration. To be read from right to left. Original size. The time-line is in seconds. 



(A) that there is no pause between expiration and the succeeding in- 

 spiration; (B) that there is a slight pause between inspiration and expira- 

 tion; (C) that the inspiratory movement is a strong, quick, active mus- 



FIG. 265 



Apparatus (Anolis stethograph, etc.) as set up by students to study the respiration of the 



southern "chameleon." 



cular movement; (D) that the expiratory curve (the down stroke of the 

 pen) is apt to be broken by a pause at some part of the descent, usually 

 either a slight stay soon after the expiration begins or a much larger 

 one about half-way through it. This expiration is characteristic of a 



