PJiotomicvogrtiphs oj Botauic<d Studies. 



59 



96. — Entire Capsule of " Capsella bursa-pastoris," Shepherds-purse. 



Stigma. 



Capsule. 

 - Seeds with folded cotyledons, 



Placenta. 



Thallamus. 

 Flower stalk. 



97. — Starch of " Solarium tuberosum," Potato. 



Starch of potato photographed with 

 polarized light. 



