56 



University of California Puhlications in Agricultural Sciences [Vol. 1 



alyzed Chemicals." All the reagents upon analysis were found 

 to be free from nitrogen. The salts were added in solution from 

 accurately graduated pipettes and burettes. The reduction 

 period for all the samples was 11 hours at a temperature of 

 20°-22° C. 



The following table shows the results obtained in a series 

 of nitrate determinations made by the reduction method in the 

 presence of "alkali." The details with reference to these deter- 

 minations are also given in the table, and the figures are averages 

 of closely agreeing duplicate or triplicate analyses. This state- 

 ment applies also to the following tables. 



Effects op Na.SOi 



Na.SO, 

 added 

 Grams 



0.35 

 0.35 

 0.35 



Effects of Na.CO, 



Na„CO, 



added 

 Grams 



0.1 

 0.1 

 0.1 



