iv Contents. 



PAGE. 



VI. The Habits and Reactions of a Comatulid, Tropiometra cannata. By HUBERT 



LYMAN CLARK 111-119 



Systematic Position 113 



Habitat 114 



Color and Size 114 



Food 115 



Locomotion 116 



Reactions to Light 116 



Reactions to Temperature 117 



Reactions to Salinity 118 



Reactions to Certain Chemicals 118 



Summary 119 



VII. Studies on the Physiology of the Nervous System of Cassiopea xamachana. By 



LEWIS R. CART. 18 text-figures 121-170 



Technique of the Experiments and Some Results of Operations that apply 



equally to all Experiments 125 



Experimental 130 



Influence of the Sense-Organs on the Loss in Weight during Starvation 149 



Influence of Sense-Organs on the Rate of Central Metabolism as measured by 



C0 2 Production 155 



Influence of Sense-Organs on the Change in Rate of Pulsation in Response to 



Changes in Temperature 159 



Relation between Area of Tissue Enervated by a Single Sense-Organ and 



rate of Pulsation 161 



General Discussion 164 



The Relation of Muscular Activity to the Rate of Metabolic Processes in 



Cassiopea 164 



Summary 166 



Literature Cited 169 



VIII. The Chemistry of Light-Production in Luminous Organisms. By E. NEWTON 



HARVEY. 1 text-figure 171-234 



Studies on the Ostracod Crustacean Cypridina hilgendorfii 174 



Studies on Fireflies 193 



Studies on a Pennatulid, Cavernularia haberi 202 



Studies on Luminous Bacteria 209 



Studies on a Squid, Walasenia sdntillans 222 



Studies on a Fish, Monocentris japonica 223 



Studies on Oxidative Chemiluminescent Reactions with Substances of Definite 



Composition 224 



General Conclusions 233 



Bibliography 234 



IX. A Physiological Study of Specific Gravity and of Luminescence in Noctiluca, 



with Special Reference to Anesthesia. By ETHEL BROWNE HARVEY 235-253 



Light Response in Noctiluca 237 



Change of Osmotic Pressure 238 



Salts of Sea-Water 241 



Acids and Alkalies 242 



Potassium Cyanide 243 



Absence of Oxygen 244 



Temperature 244 



Centrifuging 245 



Electricity 245 



Response of Injured Cells 246 



Location of Luminous Material 246 



Anesthetics 247 



Summary 251 



Literature List. . 253 



