330 BOTANICAL GAZETTE, 
havior the same modifications as haye been recognized for the penetration of 
ollen tubes 
the he of parasitic fing! into their hosts. The entrance of the p 
fies th cells hne ipmuatig auriace is most co ag age obse i and only 
Hg starch grains which disappear during its movement to the lower en oi 
he oosphere or shortly sriyhyeis ag: starch grains were : fore y thoug 
to be insi es e nucle ppber 
LV. 
the 
observed, a = ei sage of the Gatien "of the male cell Il of the pollen grain 
into the oos pher n many ear pain pat ated Orchidew and Liliace®, 
ze O 
i 
pronucleus. The other soon Tee es rbed. The nucleoli of the male a 
female stonmelss. tai fuse, and a delicate celica wall is formed on 
fertiliz oosphere. ons 
he author states his new theory of fertilization in three propositi 
‘which’ he considers well established. ucleus 
1. ess of fertilization consists in the union of the male iy piss 
eer re nucleus 0 of the oosphere, a statement which was first definitely for 
at 
- he cytoplas asm is not concerned in the process of fertilization. “i. 
The male pronucleus, like that belonging to the oosphere, is a get 
ada. direct 
In confirmation of the last proposition it has been qtabiee by lens 
oleaeranian that, although usually the male pronucleus undergoes more OF pee 
i : upon its tote 
i 
oosphere, there ng Sorperent changes especially when surrou Pe 
cytoplasm. Themorethe enveloping cytoplasm, the less pnp re the 
the changes Gein} reduced to their minimum in phanerogams. 
