502 . BOTANICAL GAZETTE [DECEMBER 
divisions, whether in somatic or in reproductive cells. In the descrip- 
tion of the division of the generative cell in Pinus,’ this sentence appears 
(p. 209): “That the spindle-fibers which originate in the cytoplasm and 
apparently grow by a differentiation of its network are later fed by the 
linin of the achromatic nuclear reticulum there seems little room for 
doubt. In fact, all the phenomena connected with this division indicate 
that we are dealing, not with persistent cell-constituents, but with differ- 
ent manifestations of one and the same thing.” With variations in 
method of expression, this idea is promulgated again and again in the 
three papers on Pinus to which reference has already been made. 
It is interesting to find such convincing evidence of the transforma- 
tion of cytoplasm to nucleoplasm, or at least, of its disappearance in the 
nucleoplasm, as that given by Brown. The close student of the phe- 
nomena of fecundation and of nuclear division finds, also, many evi- 
dences, less clearly demonstrable but equally convincing, of the intimate 
relation between these two portions of the protoplasm. 
There can be no doubt that threads from the cytoplasm unite with 
portions of the nuclear reticulum to form the spindle-fibers in the division 
of the generative cell in Pinus; and it is equally evident, at the time of 
fertilization, not only that the “included cytoplasm” disappears in the 
area occupied by the conjugating nuclei, but that a large part of the 
reticulum of the egg nucleus disappears in the general cytoplasm. These 
and similar unpublished observations on other plants convince me that . 
certain portions, at least, of cytoplasm and nucleus are interchangeable.— 
MarGaret C. Fercuson, Wellesley College. 

HENRY WILLEY 
(WITH PORTRAIT) 
The work of Henry WILLEy in lichenology entitles him to a more 
definite introduction among botanists than he has received. He was 
born in Geneseo, N.Y., July 10, 1824, and died in South Weymouth, 
Mass., March 15, 1907. During his active life he was the editor of a 
newspaper in New Bedford Mass., resigning that position in 1900. 
As a student of lichens, he probably ranked second only to TUCKERMAN, - 
whose pupil he was, and whose last work he edited. His various contri- 
butions to the literature of lichens appeared during the period from 1867 
7 FERGUSON, Marcaret C., The development of the pollen tube and the division 
of the generative nucleus in certain species of pines. Ann. Botany 15:193-2?3- pe: 
12-14. 1901. 
