Food for had to be placed upon it in estimating the profit from the 

 ^^^°^^ use of fertihzers. That from the no-Nitrate plat, since it 



74 



contained so much clover at both cuttings, was considered 

 worth only ^9.00 a ton; the first cutting on the small Nitro- 

 gen ration was valued at ^12.00 and the second cutting at 

 ;^io.oo; while ;^i6.oo and ^12.00 were the values given to the 

 first and second cuttings respectively on the plat receiving 

 the full ration of Nitrate. 



But the reduction in the percentage of clover was not 

 the only benefit to the quality of the hay. The Nitrate also 

 decreased the proportion of red top as compared with the 

 finer timothy. This tendency was noticed in the second 

 year, when a count of the stalks on selected equal and 

 typical areas showed 13 per cent, of timothy on the 150 

 pound plat, and 44 per cent, on the 450 pound plat. In the 

 third year the percentages of timothy were 39 per cent, and 

 67 per cent., respectively, and in the fourth year the differ- 

 ences were even more marked. 



Types of Characteristic Rock Shattering (2). 



An Alk r Timothy is a grass which will not tol- 



Soil Nee erate an acid soil, and it is probable that 



for Gra ^^^ liming given these plats in 1897 did 



not make them as "sweet" as would have 

 been best for this crop. Now, when Nitrate of Soda is used 

 by plants, more of the nitric acid is used than of the soda 

 and a certain portion of the latter, which is an alkali, is 



