Effects of Temperature on Tropical Marine Animals. 9 



The most successful experiment was upon Ring A, the wave within which 

 traveled around the ring 70 times per minute at 27.3° C, and gradually 

 declined to 54.5 at 17.5° C, from which temperature it was slowly heated 

 to 39° C, its rate then becoming 173. Then, upon cooling the ring to 

 26.1° C, it pulsated in a normal manner at the rate of 116 per minute, 

 showing no ill effects from the experiment (see Record ia). The obser- 



?6°C. 



24°5 



20°3 



17 5 

 E0°2 



26°.6 



27 °C. 

 28° 9 



30°. 9 



32 95 



/JJvAWV"-AAAA/vi'JUVAAAA,V\AAAW 



36°75 



37 9 



/v/^,AAyVAyv/^yv/vy^OV^-'^JVV^J\AAAy\y\A.\Ay^/^yVA-'\ 



38 3 

 ""39° 

 27°.S 



26°. 1 C. 



Record No. i a. 



