246 Robert Thojipson Young, 



the number of polar bodies formed, one being the most common 

 number. Typical skeins are not formed. 



In spermatogenesis on the contrarj^, while well marked skeins 

 are formed, I have not yet, in hundreds of testes examined, found 

 a single metaphase or anaphase of carj-okinesis. 



So far as my study of the development of the walls of the re- 

 productive organs has gone, it strengthens rather than weakens my 

 views in opposition to the epithelium theory. 



These statements are not final as my studies are not yet com- 

 plete. 



December 1907. 



