X CONTENTS 



PACK 



3. Reactions to Heat and Cold 70 



4. Reaction to Light 72 



5. Orienting Reactions, to Water Currents, to Gravity, and to Centrifugal Force . 73 



A. Reactions to Water Currents 73 



B. Reactions to Gravity 75 



C. Reaction to Centrifugal Force 78 



6. Relation of the Orientation Reactions to Other Reactions 78 



Literature 79 



Reactions to Electricity and Special Reactions 



1. Reactions to Electricity . 80 



A. Reaction to Induction Shocks 8l 



B. Reaction to the Constant Current 83 



2. Other Methods of Reaction in Paramecium 89 



Literature 91 



CHAPTER VI 

 BEHAVIOR OF PARAMECIUM (CONTINUED) 



Behavior under Two or More Stimuli ; Variability of Behavior ; Fission and 

 Conjugation ; Daily Life ; General Features of the Behavior 



1. Behavior under Two or More Stimuli 92 



2. Variability and Modifiability of Reactions ........ 98 



3. Behavior in Fission and Conjugation 102 



4. The Daily Life of Paramecium 104 



5. Features of General Significance in the Behavior of Paramecium .... 107 



A. The Action System 107 



B. Causes of the Reactions, and Effects produced by them . . 108 

 Literature 109 



CHAPTER VII 



BEHAVIOR OF OTHER INFUSORIA 



Action Systems. Reactions to Contact, to Chemicals, to Heat and Cold 



1. The Action System no 



A. Flagellata in 



B. Ciliata 113 



2. Reaction to Mechanical Stimuli 117 



3. Reaction to Chemicals . 120 



4. Reaction to Heat and Cold 124 



Literature 127 



