CONTENTS 



PAGE 



PREFACE . vii 



CHAPTER I 

 ACTION OF CHEMICAL AGENTS UPON PROTOPLASM 



CHAPTER II 

 EFFECT OF VARYING MOISTURE UPON PROTOPLASM 



1. On the Amount of AVater in Organisms 58 



2. On the Effect of Desiccation upon the Functions of Protoplasm . 59 



1. Effect of Dryness on Metabolism 59 



2. Effect of Dryness upon the Motion of Protoplasm . . 60 



3. Desiccation-rigor and Death 60 



3. On the Acclimatization of Organisms to Desiccation ... 65 

 4. The Determination of the Direction of Movement by Moisture 



Hydrotaxis 66 



Literature .... 67 



XI 



