COMMON SALT WITH SALTS OF AMMONIA. 



317 



worthy experiments in this direction were made by F. 

 Kiihlmann (< Annal de Chim.' 3 ser. t. xx., p. 279). In 

 the year 1845 he manured a natural meadow with sal 

 ammoniac, sulphate of ammonia, and common salt ; 

 and obtained the following quantities of hay : 



Crop of hay per hectare, 1845 and 1846. 



Increased crop. 



Unmanured 11263 kilos. 



Sal ammoniac, yearly 200 kilos 14964 " 3700 kilos. 



U (( linn U ) 



Common salt 200 " } - 169BO ' 868 > 



Another meadow yielded : 



Crop of hay, per hectare, 1846. 



Increased crop. 



Unmanured 3323 kilos. 



Sulphate of ammonia 200 kilos - 5856 " 2533 kilos. 



" " 900 " ) 



Common salt 183 " } - 6496 3173 



For the purpose of examining the effect of common 

 salt upon cereals, the General Committee of the Agri- 

 cultural Society ia Bavaria instituted at Bogenhausen 

 and Weihenstephan, in the years 1857 and 1858, a series 

 of experiments, conducted thus : of two plots, the one 

 was manured with salts of ammonia, the other with the 

 same quantity of salts of ammonia and an addition of 

 3080 grammes of common salt. These experiments 

 were described at page 286, and it will be sufficient 

 here to quote the crops which were obtained with salts 

 of ammonia alone, and with common salt added to salts 

 of ammonia. 



Bogenhausen, 1857. 



