1905.] the Interstitial Cells of the Ovary in the Rabbit. 50 



Henle, ' Handbuch der System. Anat.,' vol. 2, 1866. 



Kolliker, ' Entwickelungs-geschiclite des Menschen und der Hoheren Thiere.' 



Langhans, ' Virchow's Arch.,' vol. 38. 



Letzereich, Pflliger's ' Untersuchungen aus dem Physiol. Lab., Bonn,' 1865. 



Purkinje, ' Encyclopadisches Worterbuch,' vol. 10, Artikel " Ei," Berlin, 1834. 



Eomiti, 'Arch. f. Mikros. Anat.,' vol. 10, 1874. 



Rouget, 'Comptes Reiidus de 1'Acad. des Sciences,' 1879. 



Spiegelberg, (1) ' Nachricht d. k. Ges. der Wissenschaft,' Gottingen, 1860 ; (2) ' Virchow's 

 Arch.,' vol. 30, 1864. 



Strieker, ' Wiener Akad. Sitzungsbericht. Math. Naturw. Klasse,' 2 Abthg., vol. 54, 

 1866. 



Valentin, 'Muller's Arch.,' 1838. 



R. Wagner, ' Beitrage zur Geschichte der Zeugung und Entwickelung,' p. 42. 



Wharton Jones, 'London and Edinburgh Phil. Mag.,' No. 39, Sept. 1835, p. 209. 



DESCRIPTION OF PLATE 1. 



FIG. 1. Ovary of 20th day embryo (rabbit). Fixed in Gilson's fluid : 

 a = protobroque cells. 

 b = (in mitosis). 



c deutobroque cell. 

 d = connective tissue cell. 

 e = position of mesoblastic core. 



FIG. 2. Cells in ovaries of rabbits just before and after birth. Fixed in Gilson's 

 fluid : 



a = protobroque cell. 

 6 



ft 



7 \- transition forms between (a) and (/). 



J 



/ = deutobroque cell. 



FIG. 3. Ovary of three days old rabbit showing formation of egg-clusters. Fixed in 

 sublimate solution : 



a = protobroque cell. 



b = deutobroque cell. 



c = in mitosis. 



d = leptotenic stage in ovogenesis. 



FIG. 4. Cells in ovaries of young rabbits. Fixed in Gilson's fluid : 

 a = deutobroque cell in ovary of three days, old rabbit. 

 b = ,, about 18 days old rabbit. 



c 



[ = transition stages from deutobroque to ovarian cell in ovary of about 

 18 days old rabbit. 



h = interstitial cell"! 



k = follicle cell f Vary y Ung ^ 



