IOWA ACADEMY OF SCIENCE 
55 
Apple. 12. Seedling. 
jE— epidermis, ie— lower epidermis of cotyledon. Sc— sclerotic layer, ip— palisade cells , 
lower side cotyledon. 0-cross cells. Oc-npper epidermis. Si-Starch layer. Op-pal- 
isade cells, upper side of cotyledon. P-perisperm. Jc-inner epidermis. Pn— endos- 
perm. 
