O.j,; 



THE B( )TA NI( L I L 9f, I ' }AZIh E. 



rVol. XXVIJ. No. 823. 



Solutions used 



Length 

 of leaf 



Length 

 of root 



Number 



of roots 



1/10 N. NaCl 30 cc. 



ii in. 

 35 



mm. 



35 



2x 



1/10 N. tfaCT 25 cc. +1/10 N. KCl 5 cc. 



60 



4.3 



6x 



1/10 N. 2VaC2 20 cc. + 1/10 N. AX7 10 cc. 



55 



4.5 



6x 



1/10 N. NaCl 15 cc. + 1/10 N. 7vX7 15 cc. 



.3.3 



40 



Gx 



1/10 N. NaCl 10 cc. + 1/10 N. 1TCZ 20 cc. 



42 



45 



7x 



1/10 N. JVaCT 5 cc. + 1/10 N. AT725 cc. 



50 



35 



6x 



1/10 N. KCl 30 cc. 



10 



2.3 



6x 



Distilled water 30 cc. 



6S 



44 



7 



X Only one root was well developed. 



III. Experiment with NaN0 3 and KN0 3 . 



The antagonistic action of sodium and potassium on each 

 other was once more tested with sodium and potassium nitrate 

 and the following result was obtained : 



Solutions used 



Length 

 of leaf 



Length 

 of root 



Number 

 of roots 



1/10 N. NaNO z 30 cc. 



in in . 



35 



mm. 



35 



2x 



1/10 N. NaNO z 25 cc. + 1/10 N. KN0 Z 5 cc. 



60 



37 



7x 



1/10 N. NaNO, 20 cc. + 1/10 N. KN0 3 10 cc. 



50 



40 



6x 



1/10 N. NaN0. A 15 cc. + 1/10 N. KN0. 6 15 cc. 



50 



35 



7x 



1/10 N. NaNO z 10 cc. + 1/10 N. KN0 3 20 cc. 



43 



35 



7x 



1/10 N. NaN() s 5 cc. + J/10 N. KN0 Z 2.5 cc. 



50 



35 



7x 



1/10 N. KN0 S 30 cc. 



40 



35 



4x 



Distilled water 30 cc. 



68 



40 



7 



X Only one rout wns well developed. 



IV. Experiment with K.SO, and KC1. 



The antagonism between S0 4 " and CI' ions was already 

 observed in the experiment with sodium sulphate and chloride. 



