NUMBER 4” 
BNICAL CsAZETTE 
OCTOBER 1899 
OMPOUND OOSPHERE OF ALBUGO BLITI. 
BUTION FROM THE HULL BOTANICAL LABORA- 
ORY AVE; 
F. L. STEVENS. 
[Concluded from p. 176.] 
RIPENING OF THE OOSPORE. 
Process by which the oospore attains its mature condition 
y divided into three stages, which are marked by changes 
~~ nand the exospore nearly completed, and (3) a period 
lich the Secondary endospore is formed and the oospore 
'Y Tipe and ready for its winter rest. 
ei in the oosphere withdraw from the immediate 
“ve previously enlarged and the cytoplasm is more 
a0 at any earlier stage. The primitive wall becomes 
“075 thick 
. 
225 
