90 B. F. KINGSBURY 



Rtorkel, W. tJber die cystische Degeneration der Ovarien bei Blasenmole, 



zugleich ein Beitrag zur Histogenese der Luteinzellen. Ref.: Ergeb. 



d. Anat. u. Entw., Bd. 11, p. 971. 

 TouRNEUX, G. 1879 Des cellules interstitielles de I'ovaire. Journ. de I'Anat. 



et de la Physiol., T. 15, pp. 305-328. 

 Van Beneden, Edw. 1880 Contribution a la connaissance de I'ovaire des mam- 



miferes. Arch, de Biol., T. 1. 

 V.\N DER Stricht, O. 1901 L'atresie ovulaire et I'atresie foUiculaire du folli- 



cule de de Graaf, dans I'ovaire du chauve-souris. Verh. d. Anat. Ge- 



sell. zu Bonn, p. 108. 



1912 Sur le processus de I'excretion des glandes endocrines: Le corps 



jaune et la glande interstitielle de I'ovaire. Arch, de Biol., T. 27, 



pp. 585-722. 

 Vincent, Swale 1912 Internal secretion and the ductless glands. London, 



Edw. Arnold. 

 Waldeyer, W. 1870 Eierstock und Ei. Leipzig. 



1874 tJlaer Bindegewebeszellen. Arch. f. mikr. Anat., Bd. 11, pp. 



176-194. 

 Wallart, J. 1907 Untersuchungen liber die interstitielle Eierstocksdriise beim 



Menschen. Arch. f. Gynaekol., Bd. 81, pp. 271-339. 

 Whitehead, R. H. 1904 The embryonic development of the interstitial cells 



of Leydig. Am. Jour. Anat., vol. 3, pp. 167-182. 

 VON Winiwarter, H. and Saimont, G. 1908-1909 Nouvelles recherches sur 



I'ovogenese et I'organogenese de I'ovaire des mammiferes (chat). Arch. 



de Biol., T. 24, pp. 1-142; 165-276; 373-431; 628-650. 



PLATE 1 



EXPLANATION OF FIGURES 



1 Photograph of section of ovary, kitten 6 days P. P. Flemming's fluid fixa- 

 tion; no stain; no coverglass. X 30. The groups of interstitial cells, appearing 

 black from the contained fat, occupy a central position in the ovary about or 

 close to the medullary cords. Two groups of few cells each occur in the stromal 

 septa of the primitive cortex. 



2 Photograph of ovary, kitten, about 5 weeks P. P. Flemming's fluid fixa- 

 tion; no stain; no coverglass. X 20. Interstitial cell-groups appearing black. 

 One small group in the primitive cortex. 



3 Photograph of ovary, kitten, about 3 months P. P. Flemming's fluid fixa- 

 tion; no stain; no coverglass. Interstitial cell-groups black. It shows the 

 relation of the interstitial cells to the irregular follicles of this period. Small 

 groups of interstitial cells occur in the cortex. X 15. 



4 Photograph of ovary, cat, adult; Flemming's fluid; saffranin stain; inter- 

 stitial cell-groups black. 



