SYMBIOLOGY — THE BIOLOGICAL RELATIONSHIPS OF ORGANISMS 1 57 



They have become the degenerates and perverts among the body cells. 

 Instead of bearing a beneficient relationship toward the cells which gave 

 them origin, they do all within their power to destroy the cells with which 

 they are associated. 



Occasionally the leucocytes, the lymphocytes and the endothelial 

 cells of the capillaries go on a strike, not only refusing to continue the per- 

 formance of their normal functions, but undergoing active disintegration 

 thus bringing about a symptom complex which soon leads to the death of 

 the entire organism, as in purpura hemorrhagica and in pernicious anemia. 

 These degenerative changes appear to have some intimate interrelationship 

 with the sympathetic nerve system. It would appear that the con- 

 tinuous and prolonged suppression of the emotional feehngs and sympa- 

 thies leads to the degenerative cell changes mentioned. No doubt the 

 endocrine secretions are also profoundly altered in these cases. Numer- 

 ous fataUties due to cellular disintegrations have occurred during the World 

 War among those who for various reasons were obliged to completely 

 suppress or hide their true emotional feelings. The peculiar patho- 

 genic cell proUfdration encountered in malignant growths are not induced 

 by the suppression of the emotions. Neither the direct nor the inciting 

 causes of these formations are as yet known. 



By heterocytosis is meant a foreign cell proHferation in or upon an 

 organism. Thus cancer tissue may be transplanted upon a mouse. 

 Tissues and organs may be transplanted into widely distinct animals. 

 These interesting cell proliferations are sufl&ciently common as not to 

 require further explanation as to their nature. They are unquestionably 

 of symbiotic nature. 



