168 BOTANICAL GAZETTE [ SEPTEMBER 
by the term “ filarplasm,” lately proposed by Strasburger,* i 
not well founded. To be sure there are, in a great many cells 
spindle fibers that seem to take no part directly in the form: 
tion of membranes, but they apparently lose their filar form. 
The most permanent form of the kinoplasm seems to be of the 
membrane. It would seem better, then, to retain the older 
physiological term kinoplasm, since such a term would denotea 
substance having certain physiological properties without nett 
sarily being limited to any one form. The conclusion reached by 
Kostanecki #3 of the permanency of the spindle fibers in the cell, 
and that they are always reproduced by division of the individ: | 
ual fibers, ‘“‘ omnis radius e radio,” is, as Nemec * has pointed 
out, unsupported by the history of the fibers in plant cells. It 
would be impossible, moreover, to account thus for the manne! 
in which the fibers are transformed into a membrane. 
3. The relation of the carbohydrate material to the process 
of division would seem to show, as already stated, that the sub 
stance for the formation of the cell wall is held im a reserve 
form in the protoplasm before it is actually needed for the 
process of wall formation. The fact that it appeafs in ee 
tion with the spindle would suggest, as Farmer and ee 
have shown, that the spindle fibers have for their substance a 
conductive function. These authors did not ascribe @ pe 
tive function to the fibers because they did not find any 
plate. It is not impossible that the cell plate may have? 
entirely overlooked in this case.. In some of my own ie 
tions it was often very difficult to discover the young cell a 
in the midst of the carbohydrate material. o or 
If the above mentioned relation of the carbohygay 
rial to the spindle be taken in connection with the facts 5s 
by Klebs,* and by Townsend,* that the presence of | 
42 Zellhaute. 44 Od. cit. 44 Kerntheilung von Allium 
a 7 Beitrage zur Physiologie der Pflanzenzelle. Untersuch. a. d. bot 
Tiibingen 2: 500. 1888 
“Der Einfluss des Zellkerns auf Bildung der Zellhaute- 
30: 484. 1897. 
Jahr. f, wis: 
