EXPLANATION OF FIGURES. 



69 



Fig. 20. 

 Fig. 21. 



Plate XII. Fig. 22. 



Plate XIII. Fig. 23. 



Plate XIV. Fig. 24. 



Plate XV. Fig. 25. 



Plate XVI. Fig. 26. 

 Fig. 27. 



Fig. 28. 



Section 75. Obj. AA. Oc. 3. 



Kn The knob-like projection again becomes longer and lies 

 upon the organized fibrin. 



s.b. = A cloddy band covering same. 

 Section 80. Obj. A A. Oc. 4. 



fi = The structureless fibrin cover again becomes longer and 

 is similar to sections 10-25. 



s.b. = A cloddy band lying upon same. Eianlage with numerous 

 trophoblast processes. (Sketched). 



Section 92. Obj. AA. Oc. 3. 



fi = The fibrin cover partly covered by cloddy band, (s. b.) 

 again becomes longer and lies upon the ovular summit. 



F = Mucous membrane furrow. 



c. ci, cs= Confluent dilated blood spaces. 



dr ' Elongated glands surround the ovum. 



tr = The trophoblast processes are anchored in the border 

 of the ovular chamber by means of the syncytium. 



Section 94. Obj. AA. Oc. 6. f 



fi = The fibrin cover with its short cloddy band (s. b.), has 

 again become somewhat longer and lies closely applied to the 

 border tissue. 



F = Mucous membrane furrow. 



c, ci, c-= Confluent dilated blood spaces. 



dr. dn. dr, = Glands. Those marked dn and drc in the 

 illustration, reach almost to the uterine cavity. They are partly 

 filled with blood and toward the base of the ovular chamber they 

 appear partly displaced and partly dissolved. No gland is seen 

 opening into the ovular chamber. 



tr = Several trophoblast processes are anchored to the inner 

 u-;:ll of the ovular chamber. 



Section 105. Obj. A A. Oc. 8. 



The fibrin cover is no Jonger present. 



F = Mucous membrane furrow. 



c = Confluent blood spaces. 



dr. dn Glands. The one marked dn reaches almost to the 

 ovular chamber. 



tr = A number of trophoblast processes anchor themselves to 

 the inner wall of the ovular chamber partly with syncytial off- 

 shoots. 



Section 142. Obj. AA. Oc. 3. 



c = Mucous membrane elevation with innumerable confluent 

 blood spaces. 



dr = Four large glands showing a partly tortous course with 

 opening at dr.m. 



bl = Blood free in the tissue. 



Section 52. Obj. 4,0 mm. Oc. 3. 



Ectoderm highly magnified (See Figs. 16, 17 and 18). 

 1. z. =Langhans' cells on the inside. 

 sy = Syncytial cover on the outside. 

 Section 60 (See Fig. 17) under low power. 

 Ectoderm under high magnification. 



1. z. = Langhans' cells forming trophoblast cells and offshoots. 

 They are covered externally like ectoderm bands in Fig. 26 with 

 syncytium. Obj. 4,00 mm. Oc. 3. 

 Section 90. Obj. 4,0 mm. Oc. 3. 



sy = The syncytial cells advance from the trophoblast toward 

 the wall of a transversely cut capiliary (ca) and corrode the vessel 

 wall (en). 



