Nuclear Division in Lilium Martagon. By E. Sargant. 287 
It is dangerous to speculate on what takes place during life from 
observation of a number of stages in artificially fixed material. If 
however, the separation of the chromatic segments really takes place 
as I have described, we cannot conceive them as drawn apart by the 
contraction of the spindle fibres. Each segment must move along 
the set of fibres with which it is in contact, using them to some 
extent as a support. This view is supported by the odd curvatures 
of the chromosomes, which if not due to the action of fixing agents, 
certainly suggest a wriggling motion suddenly arrested. 
