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Quarterly Journal of Microscopical Science, Vol s2-81, 81-104, Copyright © 1938 by Company of Biologists
1 Department of Zoology, Trinity College, Dublin
2 Jesus College, Oxford
1. In the young oocytes the Golgi apparatus has the form of a solid body situated at one side of the nucleus. This body fragments and the pieces spread around the nucleus where they elongate and join up to form a network. This network moves out to the periphery of the cell where it fragments into pieces. No chromophobe part could be seen at any stage.
2. The mitochondria are seen in the earliest stages in the archoplasmic area. Here they occur as a number of scattered granules. In the later stages they are seen distributed in clumps throughout the cytoplasm.
3. Fat arises in the area which has been vacated by the juxta-nuclear Golgi apparatus (archoplasmic area). Prom here it spreads around the nucleus and out through the cytoplasm. There is no connexion between the Golgi apparatus and the secretion of fat.
4. The passage of material from the nucleoli through the nuclear membrane as fine granules has been described. These granules pass to the periphery of the egg where they swell up, become surrounded by a vacuole, and give rise to yolk.
Only the nucleolar extrusions and the yolk stained with neutral red.
5. After centrifuging, the contents of the egg become separated into five distinct layers as follows, beginning at the centripetal pole: fat, cytoplasm, Golgi material, yolk, and nuclear material with mitochondria.
