PLATE 



EXPLAXATIOX OF FIGURES 



25A Another peritoneal complex separated into two jiarts which are drawn 

 in their relative positions. X 866. 



25B The chromosomes of figure 2oA. X 1755. 



Chromosomes 14 to 17 ai'e interpreted; note that the chromatids of these four 

 chromosomes are well separated. 



26A A lung epithelial cell separated into two parts which are drawn in their 

 relative positions. X 866. 



26B Chromosomes of 26A. X 1755. Pair numbers dujjlicated in figure 32. 



240 



