38° 
MONTGOMERY. 
[Vol. XV. 
homog&ne. Ils se nourrissent ensuite dans le sue nucleaire. . . . 
Les nucleoles peuvent etre consideres comme une substance 
de reserve que se sdpare a un moment donne de la charpente 
nucleaire pour etre reprise par elle ulterieurement ”; he assumes 
that Strasburger’s “corpuscule du secretion” is a true nucleolus. 
“ Dans le Lilium et dans l’autres plantes, les noyaux filles 
n’offrent pas de nucleole avant d’entrer en division; en outre, 
leur aspect general au debut du phenomene est bien different 
de celui du noyau mere. ... Le fait qu’ils se separent du 
filament des que le noyau . . . arrive a l’etat de repos, pour 
etre repris par lui aux premiers stades de la division, permet 
de les consid^rer, avec M. Strasburger, comme une sorte de 
reserve.” 
Macfarlane (’ 85 ) studied nuclear division in Chara fragilis 
(fixation with osmic acid): the nucleus of the apical cell contains 
one nucleolus, in which lies an “ endonucleolus ” (a term here 
substituted for his earlier term “ nucleolo-nucleus ”). At the 
commencement of all cell divisions this part of the nucleolus 
first divides, then the nucleolus, last of all the nucleus. After 
this division of the apical cell a nodal and internodal cell 
are produced, and the former “continues to divide regularly, 
forming cells each with one nucleus and nucleolus. In the 
internodal complete cell division is henceforward absolutely 
arrested: but the earlier steps are taken ; for while the nodal 
cell has divided into three or four, the nucleolus of the inter¬ 
nodal has divided and redivided, so that four nucleoli are present 
in the nucleus of it. The internodal cell then increases rapidly 
in length, the four nucleoli meanwhile continuing to proliferate, 
so that in internodal cells, such as in the third removed from 
the apex, we soon get a large nucleus with many little dark 
nucleoli. The nucleus then divides in the simple manner 
figured by Johow, so that in the fourth internodal cell there 
may be two nuclei, each with many nucleoli, in the fifth, three 
or four nuclei, and so on, so that the internodal cells soon 
become multinuclear, and their nuclei multinucleolar.” The 
cortical nodal cells do not divide further, but “ their nucleoli 
follow the example of that of the internode . . . the consequence 
being that the cortical nodal, and soon after the cortical 
