228 



INDEX 



Parker, G. H., 23, 46, 83, 90, 149, 

 198, 220 



Parker, G. H., and E. G. Titus, 60, 

 82, 221 



Parker, G. H., and E. M. Stabler, 

 213, 221 



Pearse, A. S., 185, 221 



Personality, 14 



Pieron, H., 152, 156, 164, 174, 221 



PiSron, H. (See Bohn) 



Pigorini, L., 56, 222 



Polarity in tentacles of actinians, 



131 



in vertebrate heart, 133 

 in vertebrate intestine, 133 



Polarized transmission in nerve- 

 nets, 130 



Pollock, W. H., 156, 222 



Pores of sponges, 29 



Prenant, A., 64, 222 



Prentiss, C. W., 118, 222 



Protoneurone, 119, 207 



Pulsation of jellyfishes, 106 



Punctate substance, 116 



Piitter, A., 64, 222 



Q 



de Quatrefages, A., 152, 222 



R 



Rand, H. W., 131, 222 

 Rate of transmission in sea-ane- 

 mones, 97 



Receptive cells, 210 

 Receptor, 18 



Receptor-effector systems, 76, 200 

 Reflex action in Metridium, 135 

 Remak, 55, 115 

 Reniera, 35 



Retraction of sea-anemones, 150 

 Retterer, E., 164, 223 



Rhizostoma, 109 

 Riddle, O., 178, 223 

 Romanes, G. J., 106, 166, 223 



S 



Sagartia, 124, 142 

 Saguchi, S., 65, 223 

 Schafer, E. A., 104, 223 

 Schmid, B., 153, 223 

 Schultze, L. S., 57, 223 

 Schulze, F. E., 83 

 Schwann, 115 

 Sea-anemones, 77 



anticipatory reactions, 164 



effectors, 83 

 cilia, 83 



mucous glands, 83 

 muscles, 84 

 nettle cells, 83 



feeding, 138 



food, 156 



general structure, 77 



histology, 80 



light, 152 



locomotion, 124, 167 



modifiability of response, 168 



muscles, 84 



retraction, 150 



rhythms, 161 



nychthemeral, 161 

 tidal, 161 



temperature, 154 



tentacles, 120 



transmission, 90 

 rate, 97 



types of response 98 



unity, 173 



water currents, 160 

 Sensitiveness of jellyfishes, 112 

 Sensory fatigue in feeding actinians, 



145, 148 

 Sphincter pupilke, 50 



