Attraction-Spheres and Centrosomes. 459 
 hasappeared. The two centrosomes with their spheres appear at the upper 
side—Fig. 11. Acell in pe — spindle lies obliquely. 
Fig. 12. Last stage of citakioeds, showing the attraction-spheres and cen- 
ttosomes, with cytoplasmic radiations around the poles. (From wall of young 
ovary.)—Fig, 13. Last stage a close daughter skein; the upper canes 
Roles shows attraction-spheres and centrosomes. (From wall of ovary.)— 
Fig. 14. Resting nucleus from the epider tis of the anther, with two ateratioie 
‘15. ta faba—root tips. Daughter star; showing two ‘centrosomes 
Ny I ca apheres at the upper end of the spin 
«Rg Tradescantia rosea—root tips. Close daughter skein; the centro- 
es a ide. 
Fig. 17. Allium cepa—epidermis of bulb scales. Resting nucleus with two 
ee opheres and centrosomes.—Fig. 8, aissitad to fig. 17. 
O) 
