71 



LXXI. E. J. Russell. " Soil Improvements." Journal 

 of the Ministry of Agriculture. 1924. Vol. XXXI., 

 pp. 120-127. 



"Soil Improvement: Fertilisers and their Use." 

 Journal of the Ministry of Agriculture. 1924. Vol. 

 XXXI., pp. 217-223. 



(b) BIOLOGICAL. 



LXXII. A. D. Imms. " The Gout Fly of Barley." Journal 



of the Ministry of Agriculture. 1925. Vol. XXXI., 



pp. 1137-1140. 



A review of present knowledge of the life-history of the 



Gout Fly based primarily upon researches carried out at Rotham- 



sted by J. G. H. Frew (papers XLVIII., XLIX). It is pointed 



out that possible control measures lie in early sowing- and suitable 



manuring of the crop and that no remedial measures are available. 



LXXIII. P. H. H. Gray. " Bacteria of the Soil, and the 

 Utilisation of Organic Antiseptics." Discovery. 

 1923. Vol. IV., pp. 153-156. 



An account of the isolation and distribution of soil bacteria 

 that can decompose phenol, cresol, toluene and naphthalene. 



LXXIV. P. H. H. Gray. " Bacteria of the Soil, and the 



Decomposition of Cellulose." Discovery. 1925. 



Vol. VI., pp. 56-59. 



Promising methods of preventing losses that follow the 



incorporation of cellulosic materials into the soil are discussed 



in relation to recent knowledge of cellulose decomposition. 



LXXV. F. Tattersfield and C. T. Gimingham. " Experi- 

 ments with Sodium Fluosilicate as an Insecticide." 

 Journal of Industrial and Engineering Chemistry. 

 Vol. XVII., p. 323. 

 Preliminary experiments with Sodium and Potassium Fluo- 

 silicate as stomach poisons to caterpillars indicate that these 

 compounds have interesting possibilities as insecticides. 



(c) GENERAL. 



LXXVI. E. J. Russell. British Association for the Ad- 

 vancement of Science. 1924. Presidential address, 

 Section M. 



LXXVII. E. J. Russell. " La relation entre les organ- 

 ismes du sol et sa fertilite. " 1923. Troisieme Con- 

 gres de Chimie Industrielle, Paris. 



LXXVIII. B. A. Keen. " Experiments Upon the Wheat 

 Crop at Rothamsted." Essex Farmers' Journal. 

 1923. Vol. II., pp. 140-142. 



LXXIX. B. A. Keen. "Recent Work at the Rothamsted 

 Experimental Station." Essex County Farmers' 

 Union Year Book. 1924. 



