2,6 (ioo) Society for Experimental Biology and Medicine. 



cancer through a finely pointed hollow exit rod. It is a well-estab- 

 lished fact that these emanations are readily deposited upon sur- 

 faces with which they come in contact, especially moist surfaces. 

 If, therefore, we permit these emanations to slowly pass into or 

 upon a diseased tissue, they will doubtless adhere to a considerable 

 extent to the tissues treated in this way, especially if the applica- 



tions are made under proper plasters, coverings, coatings, etc., to 

 prevent the ready escape of the gaseous emanations. During their 

 retention in this way, the emanations disintegrate, as was stated 

 above. 



A very great advantage of these radium coatings is that all 

 instruments, etc., coated by the method described, can be readily 



