iqoo-l.] 



Effects of Water on Foliage Leaves. 



299 



Experiments with solutions applied to the cut ends of the petioles 

 of leaves (Fig. 8). May and June. 



I.— ^Leaf of Primula Obconica. 



II. — Leaf of Cucurbita. 



III. — Leaf of Trapaeolum. 



^i. NH^NOs: 2. KCl; 3. Mg-CU 

 9. PbAo ; 10. H,Odist. : 11. H.,0 tap. 



4. KNO3 ; s. NaHCO:, ; 6. FeSO, : 7. HgCl, : 8. Ba (NO:,)^ 



