[SHUTT] NITROGEN COMPOUNDS IN RAIN AND SNOW 18B 



igave .238, .871, and .583 p.p.m. of nitrogen in the form of the com- 

 pounds mentioned, making a total of 1.101 p.p.m. 



The rain and the snow, as we have seen, by their cleansing action 

 upon the atmosphere furnish our soils annually with a notable amount of 

 that important constituent of plant food, nitrogen, in a form extremely 

 available for crop use. It is important, however, to point out that while 

 our data support the widely accepted view that snow is a direct fertilizer 

 it is very evident that its value in this respect has been considerably 

 over-estimated by many of our farmers. 



