INDEX 



209 



Shibata, K; 141, 142 

 Shock movements, 97, 98 

 Shrimp, galvanotropism in, 34 ff. 

 Soule, C. G., 162 

 Spirillum undula, 140 

 Spirographis spallanzani, 63, 83 

 Spondylomorum, 109 

 Steinach, 156 

 Stereotropism, 134 ff., 157 

 Stevens, N. M., 119 

 Sticklebacks, 132 



Strongylocentrotus purpuratus, 151 

 Stylonychia mytilus, 144 

 Symmetry relations of animal body, 

 19 ff. 



v. Tappeiner, H., 117 

 Terry. O. P., 44 



Thermotropism, 155 

 Towle, E. W., 116 

 Trachelomonas ettchlora, 109 

 "Trial and error," 17, 73, 153, 154 

 Tubularia mesembryanthemum, 137 



v. Uexkiill, J., 18, 21, 22 



Vanessa antiopa, 54 

 Verworn. M., 42 

 Vitalism, 18 

 Volvox, 44, 45, 62, 83, 117 



Wasteneys, H., 86, 99, 106, 108, 143 

 Wave lengths, heliotropic efficiency 



of, 100 ff. 



Weber's law, 78, 142, 143 

 Wheeler, W. M., 132 

 Whitman, 158, 168 



