124 



THE AMEKICAK MONTHLY 



[July, 



Plate I. 



DESCRIPTION OF THE PLATE. 



Fig. 1. Upper surface of soaked tea-leaf. Upper part 

 by Ji-inch, lower by 1-inch objective ; a, an empty cell. 



Fig. 2. Under surface, by 1-inch objective. 



Fig. 3. Cuticle of upper surface, by k-inch objec- 

 tive ; a, scales of cuticle ; 6, pareijcnynial cells adher- 

 ing to the under side of the cuticle. 



Fig. i. Under side of upper cuticle, by X-inch ob- 

 jective ; a, scales adhering to cuticle. 



Fig. 5. Detached hairs, dry, by 1-inch objective. 



Fig. 6. Parenchymal cells and spiral tissue, by Cl- 

 inch objective. 



Fig. 7. A hair of the under surface of a tea-leaf, by 

 >i-inch objective. 



Fig. 8. Section of a tea-leaf, by 1-inch objective. 



Fig. 9. Cuticle of under surface of a tea-leaf, by X- 

 inch objective ; a, b, stomata openings in the hyaline 

 cuticle ; c, remains of cell-walls adhering to cuticle ; 

 d, parenchymal cells adhering ; e, cells overlying 

 stomata. 



Fig. 10. Cells of cuticle on the large veins of the 

 leaf ; a, from under surface ; 6, from upper surface. 



Figures 6, 7 and 9 drawn with camera lucida ; the 

 scale ^ven applies only to these three figures, and is 

 In decimals of an inch. 



