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of eggcells, covered in this way (which are now called ‘‘primary 
follicles’). The ingrowths of the germinal epithelium are looked 
ín & 
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Fig. 3. Atypical follicle. 
upon as the rests of tubes of Prrücer, originating from the germinal 
epithelium (ScuMaLtz in ELLENBERGER's Handbuch d. vergl. Mikrosk. 
Anat. der Haustiere, Bnd. 2, 1911). Consequently the name of 
“Keimschliuche” is given to those ingrowths. The medullary cords 
are also looked upon as rests of the proliferations of the germinal 
epithelium, viz. of the eggtubes of Prrücer. If the eggnests have 
been divided into primary follicles, vesicles, containing more than 
one eggcell would develop. According to Henin (1895) there is a 
‘struggle between the connective tissue and the epithelium in the 
ovary, which generally ends in the victory of the connective tissue. 
If this is not the case, the division of eggnests into primary follicles, 
does not, or insufficiently, take place and afterwards a vesicle with 
more than one eggcell may originate. According to SCHOTTLAENDER 
(1893) there is a regular relation between the growth of the con- 
nective tissue and the germinal epithelium. A disturbance in that 
regularity is the cause of the origin of the atypical vesicles. In later 
years, owing to a closer examination, a clearer insight was obtained 
