LIST OF TABLES 491 



TABLB NO. PAGE 



L. Critical Points for Various Plants 454 



LI. The Absolute Increase in Length of Tadpoles at Different 



Temperatures 457 



LII. The Time Required for Various Species of Fish to hatch at 



Various Temperatures 459 



Lni. Critical Temperature Points for Various Animals . . . 460 

 LIV. Average Weight and Percentage of Water in Plants reared 



at Various Temperatures 461 



LV. The Relation between the Temperature and the Sense of 



Thermotropic Response in Various Seedlings . . . 464 

 LVI. The Sense and the Average Extent of Thermotropism at 



Different Temperatures 465 



LVII. Phototropic Limiting Angles for Various Plants . . . 471 



