PLATE CXI 1 1 



Fig. i. — Ovarian follicles (b-f) and the dwarf egg a from case 27. Follicle e has a 

 normal straight stigma. Follicles b, c, d, and/ have stigmata which are forked at the 

 end. The forked portion of the stigma of b has raptured; the yolk membrane is 

 broken and most of the yolk has escaped. Part of the escaped yolk was in the body 

 cavity and part formed the nucleus of the dwarf egg a. X 2/3. 



Fig. 2. — Shell of a compound egg which was composed of two albumen masses partly 

 separated at the level of the seam in the shell by an incomplete egg membrane. The 

 larger component contained a normal yolk with a slight puncture in the yolk mem- 

 brane. The smaller one contained a drop of yolk which apparently came from the 

 yolk in the other part, a, Outside view of shell; b, inside view. X 2/3. 



Fig. 3. — Dwarf egg containing a mass of yolk not in a yolk membrane, but separated 

 from the albumen by a membrane-like layer of chalazal threads. Note nearly normal 

 chalazse. X 2/3. 



Fig. 4. — Dwarf egg formed around an artificial yolk of agar which was inserted 

 into the oviduct, a, Complete egg; b, agar yolk. X 2/3. 



