EXPERIMENTS ON WHEAT. 203 



NOTES TO TABLE IX. (p. 202.) 



1 For the IQtk and succeeding seasons -the sulphate of potass 

 was reduced from 600 to 400 Ibs. per acre per annum on Plot 1, 

 and from 300 to 200 Ibs. on all the other Plots where it was used ; 

 the sulphate of soda from 400 to 200 Ibs. on Plot 1, to 100 Ibs. on 

 all the Plots on which 200 Ibs. had previously been applied, and 

 from 550 to 336 Ibs. (two-thirds the amount) on Plots 12a and 

 12Z> ; and the sulphate of magnesia from 420 to 280 Ibs. (two-thirds 

 the amount) on Plots 14# and 14b. 



3 Plot 9a the sulphates of potass, soda, and magnesia, and the 

 superphosphate of lime, were applied in the 12th and succeeding 

 seasons, but not in the 9th, 10th, and llth ; and the amount of 

 nitrate of soda was for the 9th season only 475 Ibs. per acre, and 

 for the 10th and llth seasons only 275 Ibs. 



3 *Plot 96 in the 9th season only 475 Ibs. of nitrate of soda were 

 applied. 



* Common salt not applied after the 10th season. 



8 Plots 17a and 17&, and 180 and 185 the manures on these 

 plots alternate : that is, Plots 17 were manured with ammonia-salts 

 in the 9th season; with the sulphates of potass, soda, and magne- 

 sia, and superphosphate of lime, in the 10th ; ammonia-salts again 

 in the llth; the sulphates of potass, soda, and magnesia, and 

 superphosphate of lime, again in the 12th, and so on. Plots 18, 

 on the other hand, had the sulphates of potass, soda, and magne- 

 sia, and superphosphate of lime, in the 9th season ; ammonia-salts 

 in the 10th, and so on, alternately. 



