ACTION OF LEAD ARSENATE ON FOLIAGE. 



47 



TABLE XI. Results of experiments to determine solvent action of water constituents 



on lead arsenate. 



[Arsenic in solution expressed as AsjOs.] 



It will be seen from these results that a very large amount of 

 arsenic has been dissolved, not only by the solutions of the two 

 salts tried, but by the sample of water tested. It would appear, 

 therefore, that the frequent injury reported from the use of lead 

 arsenate may be due to the solvent action of the water used in apply- 

 ing it. To elucidate this point the composition of the water that 

 had been used in the spraying experiments reported herein was 

 determined. The results are given in Table XII: 



TABLE XII. Analysis of water used in spraying experiments. 

 [Water Laboratory, Miscellaneous Division.] 



HYPOTHETICAL COMBINATIONS 



