47 



XLII. " The Coynposition of Army Stable Manure.'^ E. J. Russkll. 

 Journal of the Board of Agriculture^ 191 7. 23, 1053-1065- 



Samples of army stable manure collected during the summer of 

 1916 were found to have the following composition : — 



Unfortunately from tlie farmers' point of view much of the urine is 

 lost so that the manure is not as rich as it might W. Another character- 

 istic is that Army manure contains only little litter; it consists mainly 

 of solid excreta. 



XLIII. " Report on Humogen.^' E.J.Russell. Journal of the 

 Board of Agriculture, 1917- 24, 11-20. 



Field and pot experiments were made both at Rothamsted and at 

 the Harper Adams Agricultural College, with samples of humogen 

 especially supplied i)y the makers, but no positixe results could be 

 obtained. It was, however, subsequently claimed l)y the makers tliat 

 the material had not been properly prepared. 



XLIV. " Comparative Field Trials with Dried and Degreased Seivage 

 Sludges at Rothamsted.'' E. J. RussELL and E. H. 

 Richards. 9th Report of the Sewage Commissioners, 

 1915. 2, 158-160 (Cd. 7820). 



Experiments were made on permanent grass laid up for hay and 

 on oats. The dried sludge contained 1.76 per cent, of nitrogen, and 

 the degreased sludge 1.55 percent.; they were applied at a rate sufftcient 

 to give 20 lbs. of nitrogen per acre, and nitrate of soda and nitrolim 

 were given at the same rate to the other plots. 



The nitrate of soda proved the most effective on hay, raising the yield 

 from 15.6 to 26 cwts. per acre. Nitrolim was less effective, producing 

 21.6 cwts. per acre ; the sludges, on the other hand, had no appreciable 

 effect. The experiments with oats had a similar result ; the control 

 plot gave 41.3 bushels of grain and 4,040 lbs. of total produce ; nitrate 

 of soda and nitrolim gave respectively 44.1 and 46.0 bushels of grain, 

 and 4;7oo and 4,900 lbs. of total produce, while the sludges gave only 

 36 and 37.4 bushels of grain and 3,600 and 3,800 lbs. of total produce, 

 thus showing no increase, but an apparent decrease as compared with 

 the control plots. 



