68 EXPLANATION OF FIGURES. 



Plate VI. Fig. 10. The left half of Fig. 9 highly magnified. Obj. Zeiss. Aprochr. 

 4.0 mm. Oc. 6. 



fi = Fibrin cover. 



e = Border epithelium. 



tr = The trophoblast processes are connected with the syncy- 

 tial cells, which might be mistaken for surface epithelium. (Com- 

 pare Peters' Plate V. Fig. 12 and 13.) 



Plate VII. Fig. 11. Section 30, Obj. AA. Oc. 8. The middle part of the Section was 

 purposely omitted. 



fi = Fibrin cover, symmetrical to the left, to the right many 

 folds present, as in a corpus luteum. 

 tr = Trophoblast processes terminating in a 

 sy =syncytial club shaped ending. 



e = Epithelial rests (?). Probably a band of syncytium com- 

 ing from the trophoblast (tr). 



Fig. 12. Section 32. Obj. Apochr. 4,0 mm. Oc. 3. 

 tr = Trophoblast processes. 

 sy = Syncytium. 



Fig. 13. Section 39. Apochr. Obj. 4,0 mm. Oc. 3. 

 fi Fibrin cover. 



sy Syncytial bands, terminating to the right in a club-shaped 

 mass of cells, 

 tr = Trophoblast covered with (sy) syncytium. 



Plate VIII. Fig. 14. Section 37. Obj. A A. Oc. 3. 



fi Fibrin cover. 



e = Rests of surface epithelium (?). 



c = Confluent blood vessels. 



F = Mucous membrane furrow. 



dr = Glands. The lateral ones (to the left and above) open 

 into the cavum uteri, to the right and below, into the furrow. 

 The middle gland (m) divides into two branches. 



The right branch approaches the ovular chamber, but does not 

 open into it. 



tr = Trophoblast processes. 



sy = Mass of syncytium. 



Plate IX. Fig. 15. Section 40. Obj. A A. Oc. 8. 



fi = The club-like end of the fibrin cover showing the folded 

 arrangement as in a corpus luteum. 



tr = The arch-like arranged trophoblast can be traced to the 

 epithelial-like bands beneath the club-like end of the. fibrin cover. 

 Question, whether epithelial rest or not. 

 Fig. 16. Section 47. Obj. A A. Oc. 8. 



fi = Fibrin cover partly undergoing organization. 



ei Eianlage. 



ekt = Ectoderm. 



tr = Trophoblast processes. 



sy Syncytial buds. 

 Fig. 17. Section 60. "Obj. A A. Oc. 8. Lettering as in Fig. 16. 



k Trophoblast buds with a syncytial covering. (See Fig. 16. 

 under high magnification). 



Plate X. Fig. 18. Section 63. Obj. D. Oc. 3. 



fi.o.= Fibrin covering undergoing organization, 

 ei = Eianlage. 

 ekt and EMi~= Ectoderm, 

 tr = Trophoblast processes. 



a = Eianlage lying with its broad surface to the inner wall of 

 the summit of the ovum. 



Plate XI. Fig. 19. Section 69. Obj. AA. Oc. 3. 



Kn^ The fibrin cover presents itself in its right process as 

 a small structureless elevation. 



