Notes. 
299 
section. The spindles are developed apparently within the nuclear membrane, and 
there is possibly some indication of the presence of centrosomes. The chromosomes 
are small and are crowded on the equatorial plate and could not be counted. There 
Semi-diagrammatic drawing showing mitosis in resting sporangium of Synchytrium 
endobioticum , Perc. x 600. 
is no reason to doubt that in the resting sporangium, as in the sorus, the zoospore 
nuclei are the product of indirect division. 
As circumstances have made it impracticable for me to continue the work in 
question it has seemed worth while to place this single observation on record. 
E. J. WELSFORD. 
Imperial College of Science, 
January , 1921. 
