E. J. KUSSELL AND B. H. ElCHARDS 



337 



Table 9. Nitrogen as amtnonia and nitric acid and chlorine in rainwater 

 collected at Rothamsted in seven periods of four years, Sept. 1, 1888 to 

 Aug. 31, 1916. 



Nitrogen 



Lbs. per anre 



September 1 Rainfall , '^^ 



to in As As 



",, of total 



As As Chlorine 



August 31 inches NH,, NjOs Total NH3 N2O5 Lbs. per acre 



1888-9 1 



to 

 1891-2 j 

 1892-3 



to 

 1895-6 

 1896-7 ) 



to \ 

 1899-1900 j 

 1900-1 



to 

 190a-4 

 1904-5 ) 



to !■ 



1907-8 ) 

 1908-9 ) 



to 

 1911-12 ) 

 1912-13 



to 

 1915-16 



27-65 2-815 0-981 3-796 74-2 25-8 12-25 



27-95 2-633 1-081 3-714 70-9 29-1 14-35 



28-12 2-682 1-264 3-946 68-0 320 17-90 



27-58 2-982 1-435 4-417 67-5 32-5 17-23 



27-14 2-542 1-276 3-818 66-6 33-4 16-75 



31-03 2-974 1-477 4-451 66-8 33-2 18-48 



31-46 1-837 1-747 3-584 51-3 48-7 

 (Received April I5th, 1919.) 



19-54 



