F. Keeble 



171 



Pig. 4. Primula sineiisis. Stomata and Epidermal cells of Giant and Normal White 

 Queen Star. Magnification the same in both. 



Fig. 5. Primula sinensis. Pollen grains of Giant and Normal White Queen Star. 

 Both Pin-eyed. Magnification the same in both. Grains swollen and stained by 

 Methyl green Acetic. 



