486 



JOHN BELLING. 



on the other side perhaps a vertical ring and a small V; or only 

 a large vertical V. The horizontal ring evidently split into two 

 ring chromatids, while the vertical ring remains. In L 3 the 

 constriction is in the vertical ring. (L 2 and L,4 show nothing 

 more.) In Fig. 5, LI shows apparently the separation of the 



FIG. 5. Slightly more advanced stage than Fig. 4. 



parts of a cross, the two horizontal members of which can be 

 seen splitting into chromatids, one passing to each pole. 



DISCUSSION. 



The following points seem most worthy of notice. 



(1) At some nodes it appears as if both chromatids of each 

 homologue could be seen, one obliquely transverse, and the 

 other reflexed. The spindle fiber is often attached (at or) near 

 the node also at the median constriction. 



(2) Some rather scanty data seem to show in Hyacinthus, 

 what is more abundantly demonstrated in Uvularia, namely, 

 that single chromatids of each homologue pass to the poles from 

 both sides of horizontal rings and V's, and that the two 

 chromatids of each homologue remain connected in the separate 

 halves of vertical rings and V's. So the horizontal rings and 



