136 EXPERIMENTS UPON LEGUMINOUS CROPS 



Table XLVIIL- — Continued. 



* 5 years (1847-1851), 40 lb. Nitrogen as Ammonium-salts ; 11 years (1802, 1804-1870, 1875, 1870, and 



1878) 80 lb. Nitrogen as Sodium Nitrate. 

 + 7 years, excluding 1840. J 31 years, excluding 1849. 



g 7 crops, excluding 1849. || 25 crops, excluding 1849. 



sown in the barley. From the first the clover grew luxuriantly, 

 and in 1884 and again in 1885 a large crop was obtained. 



The following Table (XLIX.) shows the yield of dry matter 

 and the quantity of nitrogen it contained, taking an average of 

 the three plots which had been differently manured during the 

 times the beans occupied the ground. Analyses of the soil 

 had also been made before and after the clover was sown, and 

 from these it is seen that the soil, which was somewhat 

 impoverished in nitrogen after the continuous growth of beans, 

 gained a considerable amount of nitrogen during the years of 

 clover, notwithstanding the large quantities removed in the 

 clover. 



In this case the land showed no reluctance to grow clover, 



