1900-1. J 



Effects of Water on Foliage Leaves. 



285 



Series IV. 



The following series of experiments was carried on in the basement 

 of the University Museum, and was set up on December 21st, after the 

 manner shown in Fig. 7. 



All the plants used were of the species Thunbergia alata. 



Plant A. In a spray of nutrient solution, roots in distilled 

 sterilized water, Fig. 7. 



Plant B. Same as A. 



Plant C. Plant under bell-jar, roots in distilled sterilized water, 

 no spray. 



Plant F. Same as C. 



Plant E. Plant under bell-jar, roots in a nutrient solution half 

 the concentration of that given on page 238, no spray. 



Plant D. Same as E. 



Plant G. Plant with roots in distilled sterilized water, spray of 

 distilled water. Fig. 7. 



Plant H. Same as G. 



Date. 



Length of internodes. 



Dec. 21 . 

 24 



27 



31 



Jan. 3 



14 



Poorest plant and not very green. 



One cotyledon yellow. 

 Cotyledons dropped. 



One leaf dropped. 



A. — 41 days ; A. i. — 46 days, plus, very healthy at the close of the experiment. 



