MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. I4I 



Percentage of ash in fresh material .446 



" " dried material 1.02 



VIII. Bulbs in Diffuse Light. 

 Weight of bulbs bearing leaves, grown in diffuse 



light 1.88 grams. 



Weight of dried material .666 " 



" ash .014 " 



Percentage of water 64.58 



" dried matter 35-42 



" ash in fresh material .744 



" " dried " 2.103 



III. Etiolated Leaves and Bulbs. 

 Weight of etiolated leaves 2.571 grams. 



.100 *'" 

 .005 - 

 Percentage of water 96.08 



" dried matter .3-92 



" ash in fresh material •I94 



" " dried " 5. 



" water in bulbs bearing etiolated 



leaves 64.94 



Percentage of dried matter 3 5 -06 



" ash in fresh material .634 



, " " dried " 1.77 



IV. Etiolated Leaves. 



Weight of leaves, etiolated 1.904 grams. 



" dried material '079 " 



" ash 



.00 



Percentage of water 9S-85 



" dried matter 4-i5 



" ash in fresh material .263 



" " dried material 6.33 



Oxalis violacea L. 



Etiolated leaves of Oxalis violacea developed petioles 6 to 20 cm. 

 in length which were about .75 mm. in diameter at base and i to 

 1.25 mm. in diameter at upper end. The relations between the 

 dimensions of epidermal cells of normal and etiolated petioles were 



