I 



152 EXPLANATION OF PLATES. 



XIV. — THE SKIN OF THE APPLE AND PEAR. 



(Figs. 101-109.) 



PLATE XVIII. 



Fig- 



101. Stomata in skin of young Cleopatra Apple .. .. .. x 100 



102. Surface view of epidermis of Cleopatra, showing the remains of a single 



stoma in centre of lenticels forming . . . . . . . . x 100 



103. Surface view of epidermis of Yates, showing single stoma and lenticels 



forming .. .. .. . . x 100 



104. Surface view of epidermis of Yates, showing lenticels . . x 100 



105. Surface view of epidermis of Cleopatra, showing the thick walled mother- 



cells divided into the thinner walled daughter-cells, known as " Window- 

 cells " from their appearance .. .. .... .. x 100 



106. - Cross section of skin of Cleopatra, showing epidermis and sub-epidermis, 



into which the ultimate branchlets of the vascular bundles penetrate , . x 100 



107. Cross section of skin after immersion of Cleopatra Apple in citric acid . . x 100 



108. Surface view of epidermis of Pear, showing the il Window-cells " as in 



the Apple, but somewhat smaller. . . . . . . . x 100 



109. Cross section through skin and flesh of Pear, showing epidermis and sub- 



epidermis together with groups of " Stone-cells " in the flesh . . x 100 



