FRANCIS E. LLOYD 



TABLE I 



Fouquieria splendens. Transpiration measured by volume of water absorbed and 

 loss by weight. Piece No. 1, August 21-22, 1910 



Net loss: 0.45 cc. Weight of piece, about 80 grams. 



the plant, or several factors, absent from the purely physical 

 instrument. Indeed, throughout the whole period of observation, 

 the responses of the former are less abrupt than those of the latter. 

 It appears quite certain, therefore, that the physical peculiarities 

 of the leaf are, in part at any rate, the responsible factor, but the 

 separation of the stomatal influence, due to changes in dimensions 

 (which are very limited), and that due to the banking up effect 



