134 



lute quantity has an appreciable value as a fertilizer. The methods 

 of determining the quantities of nitrogen need not here be given, but 

 the following results of observations in Europe give at least an 

 approximate idea of the probable effect of rains in the United States. 

 (See Annuaire de Montsouris, 1889, p. 254.) Similar data for our 

 own territory have not been measured, so far as I can find. 



Quantity of nitrogenous compounds in the rainfall of 1S88 at Montsouris. 



Total 

 rain- 

 fall. 



hev of contains receives- 



ramy ] 



days, j Am- Nitric} Am- Nitric 

 monia. acid. I monia. acid. 



January 



February 



March 



April ..._ 



May 



•June 



July.. 



August 



September ... 



October 



November 



December 



Total ... 



Average 



55.5 

 19.8 

 79.6 

 76.0 

 47.5 

 23.0 

 19.4 

 48.3 

 31.6 



548.3 

 45.7 



16} 



22| 



nl 



.:! 



17 1 

 10 



mg. 

 5.15 

 2.19 

 1.51 

 1.50 

 0.80 

 1.10 

 0.56 

 0.88 

 2.33 



2.21 

 3.62 



mg. 

 0.84 

 1.00 

 0.61 

 0.78 

 0.82 

 1.02 

 1.36 

 1.10 

 0.87 

 0.68 

 0.85 

 0.50 



mg. 



110.7 

 84.1 



132.4 

 84.2 

 15.8 

 87.9 

 44.0 

 41.7 

 53.6 

 51.4 



106.7 



114.3 



18.1 

 38.5 

 53.3 

 43.2 

 16.2 

 81.2 



las.e 



52.5 

 20.1 

 13.2 

 41.2 

 15.9 



497.0 

 41.4 



Quantity of nitrogenous compounds in the rainfall during successive years at 

 Montsouris. 



