Vlll TABLE OF CONTENTS 



Chapter Page 



XIV. Effects of Radium Rays on Alcoholic Fermentation... 206 



XV. Effects of Radium Rays ox Tropistic Response 216 



1 . Effects of the Rays on Normal Tropisms 219 



2. Can Radium Rays cause Tropistic Response.'* 219 



XVI. Histological Effects OF THE Rays OF Radium 223 



XVII. Effects of Radium Rays on Nuclei and Nuclear Divi- 

 sion 230 



XVIII. Effects of Exposing Germ-Cells to the Rays of Radium 235 



XIX. Theoretical Considerations 257 



