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



Plant used, Helianthus (Sunflower). 



275 



Apparatus was arranged as in Fig. 7 for plants i and 2 in the same 

 bell-jar. The spray was a nutrient solution and the roots were in 

 distilled water. 



Plants 3 and 4 were arranged as in i and 2, excepting that the spray 

 was of distilled water. 



Plants 5 and 6 were in nutrient solution, as in the ordinary water 

 culture, but under a jar with ventilation at the top and bottom. 



Plants 7 and 8 were under a bell jar with ventilation at the top, and 

 the inside was kept moist by means of flat dishes of water ; roots were 

 in distilled water. Numbers 9 and 10 were in soil and were kept under 

 a jar. Numbers 11, 12, 13, 14 were in soil in an ordinary flower-pot in 

 the room. 



