Photo: J. J. Ward. 



A PHOTOGRAPH (HIGHLY MAGNIFIED) OF RIPE POLLEN-GRAINS FALLING FROM THE STAMENS 

 OF A MALLOW FLOWER AN ENORMOUS QUANTITY OF LIVING MATTER PRODUCED IN AND 



BY THE GERM-PLASM 



Each grain is a germ -cell , conveying the male factors for reproduction to combine with those of the ovum- 

 cell contained in the ovary. 



