thea] CURRENT LITERATURE 283 
phores in the trichogyne and antherozoids, are very different as regards the 
_ wtivities of the nuclei and processes of fertilization. 
The antherozoids of B. Bohner? differ from any that I have ever seen in hav- 
ing almost invariably two nuclei. When the antherozoid fuses with the tricho- 
gyne the nucleus nearest to the point of application passes into that structure 
amd is usually followed by the second, which however may remain behind in 
the antherozoid. 
__ Thetrichogyne and carpogonium of 2. Bohneri have only one nucleus which 
lies in the carpogonium. One of the nuclei from an antherozoid passes the 
_ agthof the trichogyne into th pogonium through the constriction between 
_ thetwo structures. Fertilization takes places in the carpogonium, where the 
_ male nucleus fuses with the female. 
___ The passage of the male nucleus causes the protoplasm in the trichogyne 
_ ‘Wgather into a peculiar dense mass which indicates a certain stage in the 
_ process of fertilization, 
Alter fertilization the ca i i 
2 rpogonium becomes cut off from the trichogyne, 
and the late : sal 
€r may then contain one or more nuclei introduced from one or 
iter antherozoids that fuse with it. Extensive fragmentation of these 
r. 
may occur late 
___ The phenomena describ 
. tage af the processes of fe 
 Oltmanns and Ww 
Thave 
ed are in all respects compatible with our knowl- 
ttilization. They accord fully with the accounts of 
ille for other members of the Rhodophycee. 
realized for a long time that my account of Batrachospermum * left 
pomtered in a very unsatisfactory state. The conditions that 
Were exceptional and at variance with those so generally present 
However, at the time, I was convinced of the 
d since that publication I have several times 
ways finding the same structures that I figured 
ss of my position, an 
~ 4 MY material, al 
to the nucleus that I have supposed 
Such a stage would be exceedingly 
"© Rot wish 1b ese: : : 
“iy 8 mutise the work of Schmidle further than to suggest 
» together with an absolutely complete 
ss of fertilization, 
fertilization of Batrachos 
: Ustrating the proce 
“Davis: The 
permum. Ann, of Bot. 10:49. 1896. 
