386 
THE DEVELOPMENT OF THE CHICK 
Via. 223. — Profile reconstruction of the Wolffian 
duct and primordium of the metanephros of a 
chick embryo of 6 days and 8 hours. (After 
Schreiner.) 
XXV to XXXIII, twenty-fifth to thirty-third 
somites. Al. N., Neck of allantois. Cl., Cloaea. 
Int., Intestine. M’s’n., Mesonephros. n. T., 
Nephrogenous tissue of the metanephros include: 
within the dotted lines. W. D., Wolffian duct. 
Ur., Ureter. 
