TABLE OF CONTENTS 



Page 

 EDITOR'S COMMENTS iii 



INTRODUCTION 1 



Discovery of the rays. Study of their biological and medicinal 

 properties. The name of the rays. A short account of the 

 physics of the rays. Units of measurement. 



Chapter 1 

 PHYSIOLOGICAL CHANGES DUE TO ACTION OF X RAYS 4 



Determination of the concept of stimulation. A short historical 

 survey of experiments set up for the purpose of studying the 

 action of X rays. Contradictory data obtained by various 

 investigators. Explanation of these contradictions using the 

 action of the rays on beans as an example. Investigations 

 conducted by the author and her co-workers in the electro- 

 biological laboratory. Action of the X rays on winter rye. 

 Action of X rays on meadow grasses. Conclusions based on 

 experiments performed in the electrobiological laboratory. 



Chapter 2 



CHANGES IN MORPHOLOGICAL CHARACTERISTICS 33 



Hereditary and non -hereditary characteristics, mutations. 

 Variations. Lethal and sub-lethal mutations. A short 

 historical survey of experiments conducted for the purpose 

 of obtaining changes in morphological characteristics. Changes 

 in sex due to the action of X rays. Experiments performed 

 in the electrobiological laboratory by the author and her 

 co-workers. Changes in rye due to the action of X rays. 

 Changes in hemp due to the action of X rays: changes in 

 size, shape, and color of the leaves, sex, and viability. 

 Evaluation of data obtained by various investigators. Prospects 

 for the formation of new species by experimental means. 



