224 THOMAS H. IJKYCE. 



Fig. 23. — First polar body ami ceiitrosomes of second division before 

 formation of spindle. 



Figs. 21 — 26. — First polar body and second polar spindle in niclapliase, 

 showing the clironiosonies in various aspects. 



PLATE 12. 



Figs. 27 and 28. — Two stages in the anaphase of second polar division. 



Fig. 29. — Constriction of spindle in formation of second polar body. 



Fig. 30. — First polar body and second polar spindle in teloj)liase. Scciion 

 is oblique, so that second polar body is not seen. The point of constriction 

 of the spiudle shows one form in which the mid-body occurs. 



Fig. 31. — The two polar bodies and the reconstituted nucleus. 



Fig. 32. — The completely re-formed and matured nucleus, which has retired 

 to near the centre of the egg. 



Fig. 33. — An early phase iu the reconstruction of the nucleus; a number 

 of vesicles are seen wliicli run together to form the single vesicle seen in 

 Fig. 31. The remains of the spindle and mid-body are also seen. 



Fig. 34. — Abnormality of second polar body. It is a small cell in which the 

 nucleus is being reconstructed exactly as in the ovum. 



