1892.] Embryology. 1049 
of the bud. The fold mentioned in the preceding stage (a in Figure 
3) was very distinct here, but was not usually in the position shown in 
the figure, i. e., projecting into the digestive tube, but was most of the 
rao 
—— 
Fic: 2. Fic. 3. 
time thrust far into the bud, and it is certain that the fecal matter just 
spoken of passed through this. It is my belief from all that I could 
make out, that the strand of tissue described in the former stages now 
