214 MEAD. 
Fic. 29. Second maturation-spindle; compare Fig. 17. One chromosome 
near outer pole of the spindle. All the daughter-chromosomes can be seen in 
this section by focusing. 
Fic. 30. A little later stage, paired sperm-centrosomes ; whitish band between 
the two centrosomes. Centrosomes of maturation-spindle indistinct. 
Fic. 31. Telophase of second maturation-spindle. Degenerating centro- 
somes in the second polar globule, f.g.2; Zwischenkorper, z.; sperm-nucleus, ¢, 
with two centrosomes which are not so widely separated as in Fig. 30, though here 
the maturation processes are farther advanced (all one section 3). 
Fic. 32. About the same stage; shows the more usual conditions in that the 
second polar globule, .g.2 pushes the first away from egg. Egg membrane, m, ; 
z. Zwischenkorper or middle-plate. 
Fic. 33. Later than Fig. 32. The chromosomes at inner end of second 
maturation-spindle in the form of loops and: partly surrounding the centrosome 
and aster. It is possible that there are two centrosomes. The location of the 
centre of the aster is indicated by the point of convergence of the rays, which at 
this time are very prominent. 
