Antitoxic Action of Certain Bases 



139 



TABLE 4. Experiment with Wheat. Duration, Thirty Days. Data for Eight 



Plants 



Composition of solution 



Total 



green weight 



(grams) 



Average length 



of tops 



(centimeters) 



Average length 



of roots 



(centimeters) 



N/50KC1 



N/50 KCl+N/100 MgCU . . 

 N/50 KCl+N/500 MgCh . . 

 N/50 KCl+N/1,000 MgCh . 

 N/ 1,000 KC1+ N/500 MgCh 



N/500 MgCU 



Distilled water 



0.65 

 0.52 

 1.00 

 0.70 

 1.00 

 Dead 

 0.56 



5.5 

 4.0 

 7.0 

 6.0 

 7.5 

 4.0 

 4.0 



1.0 

 5.0 

 6.0 

 4.0 

 5.0 

 Slight 

 4.0 



In Table 5 a striking case of mutual antagonism is shown between 

 NaCl and MgCl2. It is remarkable that two salts when combined will 

 permit considerable growth, when if either one is present alone it will 

 cause death of the plant. 



TABLE 5. Experiments with Wheat. Duration, Thirty Days. Data for Eight 



Plants 



Composition of solution 



Total 



?reen weight 



(grams) 



Average length 



of tops 

 (centimeters) 



Average length 



of roots 



(centimeters) 



N/5(>NaCl 



N/50: NaCl+N/100 MgCU . . 

 N/50" NaCl+ N/500 MgCU . . 

 N/50 NaCl+N/1,000 MgCh. 

 N/500 NaCl+ N/500 MgCU . 

 N/500 MgCU 



N/50 NaCl+N/100 MgCU. . . 

 N/50 NaCl + N/500 MgCU. . . 

 N/50 NaCl+N/1,000 MgCU. 

 N/100 NaCl+N/500 MgCU. . 

 N/500 NaCl+N/500 MgCU. . 

 N/1,000 NaC14-N/500 MgCU 



N/500 MgCU 



N/1,000 MgCU 



N/50 NaCl 



N/100 NaCl 



Distilled water 



0.400 

 0.800 

 0.650 



2.0 

 4.0 

 5.5 

 5.5 

 1.0 

 4.0 



1.0 



4.0 



2.0 



1.0 



Very slight 



0.900 

 0.975 

 1.125 

 1.150 

 0.840 

 0.810 



0.900 

 0.570 



8.0 

 9.0 

 9.0 

 11.0 

 9.0 

 8.0 

 6.0 

 8.0 

 1.0 

 8.0 

 8.0 



8.0 

 13.0 

 12.0 

 10.0 



6.0 



5.0 





 Slight 







5.0 



7.0 



♦Slight. Determination not made. 



