. BOTANICAL GAZETTE. 331 
The second proposition, which makes the 
secuictGin yg the pro- 
nuclei aly, incidental i in the process of fructification, has given rise wag “ uch 
controversy. It is ce dg y necessary to loo e Ba pathic: to Mele 
aa “a sioaryge ortant point. In the sie - the progamous aier cell the - 
se 
oF 
as 
| 
a 
— 
= 
Be 
a 
o 
Ba 
=) 
ona 
oO 
“| 
o 
2) 
3 
— 
5 
cluded that the procreative power can . — in the cytoplasm. e cyto 
i and of the vegetative cell in an- 
Slosperms serves in part as a vehicle to gens rt the nu ucleus, and therefore 
bg the same shee as the cilia of the ilkecdant:! in the vascular cryp- 
8 
The first preedes naturally follows from what has been said, for if the 
cy toplasm i is not concerned in fructification, the pronuclei—male and female— 
u 
u 
: every item of the process of fructification with the accompanying c 
e then discusses many recondite questions connected with the 
uc 
Beneden and Ch. Julin.t Over eighty pages are dev: 
packed with new and important ee that it is autirely impossible to give 4 
Profitable abstract in the space at e 
Die Pilethiere oder Schleimpilze, nach ats diel ndpunkte bearbeitet. Von am, 
Zopf. Eduard Trewendt. Breslau, 1886. Roy. 8°. pp. 174. Ilus- 
trated, 
n this exceedingly interestin 
Bar earnest and pat the ao labor an 
nual oes ga owski, Klein, Brefeld, VanTieghem 
work 7 author has given the results of his 
freely from the writings of 
and other investigators in the 
sink { the morphology of the 
opening chapter he makes a comparison of the morp gy 0 
a with Sige crpholely of the Bumyeetazo, and is led to the conclu- 
son that the representative of both groups are substantt gad similar in their 
‘arly development, an viet between them raid of union exist. 
Mycetoz0a in ~ system 
borderland be- 
d 
geste members of the grou p fom 
he successive s stages of zoospores, am 
ysts. 
t = a Cemiparative Embryology: 
na XXL . , : 
sek gu the ‘spermatozoids of Ascaris megalocephala, in Bull. de Y’ Acad. roy. de Belgique 
2 
