igoo-i.] Effects of Water on Foliage Leaves, 279 



were made upon the last three internodes in particular, and recorded, 

 and also upon the whole plant as nearly as possible, so as to give the 

 increase in growth from time to time. The measurements are in all 

 cases given in millimeters. 



Plant I A. — Thunbergia alata, roots in distilled sterilized water 

 and fed with a spray of nutrient solution. 



Plant I B. — Fagopyrum esculentum (buckwheat), under the 

 same conditions as i A. 



Plant I C. — Ipomaea purpurea (morning-glory), under same 

 conditions as i B., and substituted for it. 



Plant 2 A. — Thunbergia alata, roots in distilled water and 

 plant kept under a jar frequently moistened and venti- 

 lated, no spraying. 



Plant 2 B. — Fagopyrum, under same conditions as 2 A. 



Plant 2 C. — Thunbergia, substituted for 2 A. and kept under 

 same conditions. 



Plant ^ A. — Thunbergia alata, roots in a nutrient solution 

 formula given on p. 238 ; atmospheric conditions same as 

 2 A. 



Plant J B. — Fagopyrum, same as 3 A. 



Plant ^ A. — Thunbergia alata, roots in distilled sterilized water 

 and under the same conditions as i A., excepting that the 

 liquid used for spraying was distilled water instead of a 

 nutrient solution. 



Plant ^ B. — Fagopyrum, under same conditions as 4 A. 



