204 DR. JAMES FOULIS. 



groups. Under the germ epithelial layer the youngest con- 

 nective tissue is found, and in this situation it is the fore- 

 runner of the tunica albuginea. This youngest connective 

 tissue appears as a transparent jelly-like substance, and in it 

 are numerous fusiform corpuscles or nuclei. Fine homo- 

 geneous points of this young tissue may be seen insinuating 

 themselves among the corpuscles of the germ epithelium, and 

 in some preparations of six and seven and a half months' foetal 

 ovaries in which the germ epithelial layer is partially de- 

 tached such fine points of the jelly-like young tissue may be 

 seen in considerable numbers. 



In many places immediately under the germ epithelium, 

 small groups, consisting of a few germ epithelial corpuscles 

 (fig. 3, q, q, q), are found in the act of being surrounded by 

 this same jelly-like tissue; some of the groups are completely 

 surrounded and separated from the germ epithelium layer, 

 while others are partially surrounded, and are still in con- 

 nection with the germ epithelium superiorly. The youngest 

 connective tissue can always be traced in direct continuity 

 with vascular bundles of tissue which completely surround 

 the large groups of im.bedded germ epithelial corpuscles, and 

 is part of the general stroma of the ovary. This imbedding 

 of germ epithelial corpuscles takes place under the germ 

 epithelium all round the ovary. 



After being thus included in meshes of the stroma, the 

 germ epithelial corpuscles increase in number and in size, 

 and there results the formation of those large eg^^ clusters 

 which are found under the germ epithelium in all parts of 

 the ovary. 



Each imbedded corpuscle undergoes the following change : 

 — The nucleus enlarges, gradually becoming a spherical 

 vesicular body, and the protoplasm which surrounds it is at 

 the same time increased in quantity. As the result of the 

 enlargement of each corpuscle in the group, the whole group 

 as a cluster expands and becomes more or less spherical. As 

 these egg clusters expand, those lying immediately under the 

 germ epithelium push the latter structure before them, and 

 in this manner the surface of the young ovary is made to 

 present a very irregular appearance. Between the promi- 

 nences or irregularities thus produced are depressions or 

 furrows. These originate as simple depressions between two 

 or more adjacent expanding egg clusters, and they become 

 deepened by the growth and expansion of new egg clusters 

 under the germ epithelium in connection with those already 

 formed. 



In describing the appearance of a seven and a half months' 



