428 EDWIN G. CONKLIN. 



EXPLANATION OF PLATE VI. 



FIG. 31. Normal egg showing cytasters sometimes present in eggs at the 

 stage between the close of the maturation divisions and the beginning of the first 

 cleavage. These cytasters are local aggregations of plasma along the lines of 

 astral radiations. 



FIGS. 32, 34, 35. Eggs from Exp. No. 805. 2 per cent. NaCl 4 hrs. Numerous 

 cytasters are shown in different cell stages and division phases; in every case these 

 cytasters are local aggregations of plasma along the lines of astral radiations, the 

 remaining plasma being gathered around the nuclei or spindles. 



FIGS. 33, 36. No. 998(3). i per cent. NaCl 5 hrs. The plasma is concentrated 

 around the spindles, only small portions being left along the astral radiations in 

 the 2-cell stage and none in the 4-cell stage. No cytasters are present after the 

 2-cell stage. 



