K MIYAKE.— INFLUENCE OF THE SALTS ETC. 



29 



Solutions used 



Length 

 of leaf 



Length 

 of root 



Number 

 of rjots 



1/10 N. NaN0 3 30 cc. 



Dim. 



43 



20 



1 



1/10 N. NaNO s 25 cc. + 1/10 N. NaCl 5 cc. 



63 



35 



7x 



1/10 N. NaNO s 20 cc. + 1/10 N. NaCl 10 cc. 



51) 



30 



6x 



1/10 N. ifaim, 15 cc. + 1/10 N. NaCl 15 cc. 



55 



35 



6x 



1/10 N. NaNO s 10 cc. 4- 1/10 N. NaCl 20 cc. 



50 



25 



5* 



1/10 N. NaNO s 5 cc. + 1/10 N. NaCl 25 cc. 



57 



30 



6x 



1/10 N. NaCl 30 cc. 



46 



25 



3x 



Distilled water 30 cc. 



78 



58 



7 



X Only one root was well developed. 



VIII. Experiment with KN0 3 and KCl. 



The same antagonism as that of the preceding experiment 

 was once more examined with potassium salts. The result 

 obtained was as follows : 



Solutions used 



Length 

 of leaf 



Length 

 of root 



Number 

 of roots 



1/10 K KN0 s 30 cc. 



mm. 



47 



mm. 



25 



3x 



1/10 N. KN0 3 25 cc. + 1/10 N. KCl 5 cc. 



60 



35 



6x 



1/10 N. KN0 3 20 cc. + 1/10 N. KCl 10 cc. 



50 



35 



6x 



1/10 N. KN0 3 15 cc. + 1/10 N. KCl 15 cc. 



48 



30 



6x 



1/10 N. KNOs 10 cc. + 1/10 N. KCl 20 cc. 



50 



40 



7x 



1/10 K KN0 S 5 cc. + 1/10 K KCl 25 cc. 



72 



40 



7x 



1/10 N KCl 30 cc. 



50 



25 



7x 



Distilled water 30 cc. 



78 



58 



7 



X Only one root was well developed. 



IX. Experiment with K 2 S0 4 and MaCl. 



The antagonism between K, Na, SO/' and CI' ions on each 

 other was established with potassium su^hate and sodium 

 chloride according to a method similar to that of Experiment 

 VII. The following result was obtained : 



