File:Long1911 plate02.jpg

Plate 2 First Maturation Spindle

Fig. 8. Ovarian egg. The chromosomes have become arranged in the plane of the equator. X (880) 704.

Figs. 8a, 86. Enlarged views of the two sections into which the spindle in fig. 8 is cut. There are 20 chromosomes. X(25oo) 2000.

Fig. 9. Section of a spindle like that in fig. 8. X (2500) 2000.

Figs. - 1 oa, 1 ob. The two sections of a spindle of which the fibers at one pole converge to a point. There are 20 chromosomes. Ovarian egg. X (2500)2000.

Fig. 11. Section of a spindle similar to the preceding. Ovarian egg. X (2500)2000.

Fig. 12. Ovarian egg. The polar ends of the spindle fibers are becoming thickened, and the clear region about the spindle is visible. One of the 20 chromosomes (some of which are in adjacent sections) has been displaced into the cytoplasm. X (1200) 960.

Fig. 13. Ovarian egg. The circumpolar bodies are formed at the poles of the spindle, and the clear region is evident. X (1200) 960.

Fig. 13a. More highly magnified view of the spindle shown in fig. 13. X(25oo) 2000.

Fig- I3b. View of that portion of the spindle seen in fig. 13a which falls in the following section. X(25oo) 2000.

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