INDEX 



229 



Spinosella, 45 

 Sponges, 25 



contractility, 26 



currents, 25, 29 

 pressure, 44 

 volume, 46 



dermal membranes, 34 

 pores, 29 



flesh, 26 



general structure, 25 



geotropism, 28 



osculum, 29, 37 

 sphincter, 43 



ostia, 29 



pore membrane, 34 

 sphincter, 35 



pores, 29 



strength of pore membrane, 34 



transmission, 47 

 Stabler, E. M. (See Parker) 

 Stahl, 1C 



Steinach, E., 51, 223 

 Stoichactis, 144 



Strength of sponge currents, 44 

 Stroke of cilia, 65 

 Stylotella, 26, 27, 35, 37, 46 

 Suberites, 25 

 Swimming plates of ctenophores, 66, 



71 

 Synaptic nervous system, 117, 208 



T 



Temperature and sea-anemones, 154 

 Tentacles of sea-anemones, 123 



Tentacular responses in feeding, 143 

 Tidal rhythms, 161 

 Titus, E. G. (See Parker) 

 Torrey, H. B., 142, 17?, 185, 223 

 Transmission in jellyfishes,106, 109 



in sea-anemones, 90 



in sponges, 47 



Trapped transmission waves, 109 

 Tubularia, 178, 185 

 Tunicate heart, 56 

 Types of response in sea-anemones, 



93 



U 



von Uexkiill, J., 120, 167, 174, 223 

 Unity of sea-anemone, 174 



Vertebrate central nervous organs, 



206 



heart, 53 



Verworn, M., 72, 223 

 Vesalius, 15 

 Vignon, P., 83, 223 

 Volume of sponge currents, 46 



W 



Waldeyer, 116 



Walton, C. L. (See Fleure) 



Washburn, A. L. (See Cannon) 



Wasteneys, H., 157 



Water currents and sea-anemones, 



160 



Wilson, H. V., 30, 33, 223 

 Wolff, M., 81, 118, 223 



