PLATE 2 



Fig. 19. Shows the oviduct of a hen with infundibulum, uterus, and part of 

 vagina. 



a. Uterus great with egg. 



b. Vagina, 



c. Muscular fibers which spread out to the vagina, to the sides of uterus, and 

 to the inferior mesometrium. 



ddd. Inferior mesometrium; muscular fibers are to be seen in this and vessels 

 running parallel with oviduct. 



e. Fimbriated edge of infundibulum. 



/. Mouth of infundibulum. 



g. Ligament of infundibulum, attached to root of penultimate rib on left side. 



h. Cut-off part of air sac attached to ligament. 



Fig. 195^. Posterior part of oviduct where it passes into isthmus with the at- 

 tached mesometrium, composed of interwoven muscle fibers, nerves, and vessels. 



Fig. 20. Fimbriated part of infundibulum composed of inter^voven muscular 

 network (magnified). 



Fig. 25. Part of shell membrane whose margin shows the "woolly" structure. 



Figs. 26-27. ^''^s °f shell with underlying membrane while it is being formed 

 by crystallization. 



Fig. 28. Elucidating the form of the oviduct. 



i 



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