No. 4.] MANURIAL PROBLEMS. 181 



of nitrogen in nitrate of soda 236 .stalks were present per 

 square foot, of wiiicli 104 were tiniotliy and 132 red-top. 

 The timothy stalks occupy more space than red-top, wliich 

 probably accounts for the smaller total number of stalks 

 where the full ration of nitrogen was applied. A striking 

 feature of this experiment in each of the five years has been 

 the relatively gi'eater amount of timothy where the full 

 ration of nitrate of soda has been used. This has been 

 accounted for upon the assumption that the large residue of 

 soda tends to counteract the development of soil acidity in 

 a greater degree than the one-third ration. 



It has been found that, when the larger (juantity of nitro- 

 gen has been used, the nitrogen of the plant has been more 

 fully built up into albuminoids than otherwise, — a most 

 desirable feature, from the feeder's stand-point. 



The losses of hay by shrinkage in the barn have been 

 found to range from 13.3 to 19.(3 per cent. 



Timothy and red-top grown upon the same area at the 

 same time were not found to be equally rich in nitrogen. 

 In this respect the red-top was richer than the timothy, 

 though a greater proportion of the nitrogen of the latter than 

 of the former had been changed into albuminoids. 



As concerns the mineral constituents of timothy and red- 

 top, grown as above specified, the latter contained more lime, 

 magnesia, phosphoric acid and potash than the former. It 

 has been found that every 1,000 pounds of field-cured hay 

 removed from the soil, where the full ration of nitrogen was 

 used, from 5.8 to fi.l pounds of nitrogen, from 15 to 16.2 

 pounds of potash and from 3.1 to 3.3 pounds of phosphoric 

 acid. 



For the foiu- years from 1899 to 1902 inclusive the profit 

 after paying for the manure, where the full ration of nitro- 

 gen was employed, was $48.26 greater than where only a 

 one-third ration of nitrate of soda was used. 



The net value of the hay crop of the five years, after pay- 

 ing for the manures at retail prices, amounted, in the case 

 of the plot receiving the full ration of nitrogen, to $150.11. 

 In this estimate the first crop of 1899 was valued at $15 per 

 ton, the second crop of that year and of 1901 at $12 per ton, 



