CONTENTS. Ill 



Page. 



Causes of unproductivity in soil, H.J. Wheeler and J. F. Breazeale 842 



Soil inoculation with artificial cultures, M. Ferguson 843 



Bacteriological soil investigation, P. Ehrenberg 844 

 Absorptive power of soils for bone and mineral superphosphates, C. 



Montanari 844 

 Effecl of liming upon constituents of soil, B. L. Hartwell and J. W. Kel- 

 logg - 844 



Directions for liming 8 i: ( 



Cultural management as applied t > sewage irrigation al Paris, P. Vincey 845 

 L cal fertilizer experiments in Malmohua County, Sweden, L904, < '>. NTordin 



and M. Weibull 845 



Experiments with mineral fertilizers on Krotkov estate, A. [. Stebul 845 



Report on commercial fertilizers, L905, E. H. Jenkins and A. L. Winton 846 



Commercial fertilizers, P.Evans 846 



Analyses and valuations of commercial fertilizers, J. J*. Street el al sir, 



Report of analyses of samples of fertilizers collected [in New York], 1901 847 



Fertilizer analyses, fall ssason, L904, to spring season, 1905, B. W. Kilgore S C 



Commercial fertilizers, W. W. Miller and N. W. Lord 847 



Miscellaneous analyses, B. L. Hartwell, J. W. Kellogg, and M. Steel -i; 

 Night s dl, A. Gran 847 

 Production of manure, green manuring, and purchase of commercial fer- 

 tilizers, F. Aereboe .. 847 



Significance of ashes as fertilizer, 1). X. Prianishnikov 841 



Transformations of sodium nitrate in the soil, J. Stoklasa 8 17 



Chilean nitrate production and trade, K. E. Mansfield 847 



Calcium cyanamid in agriculture, A. d'Ercole .. 848 



Thomas-ammonium-phosphate, a new manure, Miiller 848 



Ground rock for fertilizing purposes, A. S. Cushman 848 



Potassium salts. W. M. Courtis ... 8 I v 



AGRICULTURAL BOTANY. 



Relation of transpiration to growth in wheat. B. E. Livingston 848 



The development of root hairs. Laetitia M. Snow . . 849 



Agricultural microbiology, E. Kayser . ... 849 



On proteolytic enzyms, II, A. L. Dean .. 850 



Structure and biology of the yeast plant, F. Mutchler 850 



Synthetic culture media and biochemistry of pigments, M. X. Sullivan 850 



The mistletoes of caoutchouc ( ). Warburg 851 



New pocket atlas on edible and poisonous mushrooms, P. Dumee 851 



FIELD CROPS. 



Report of the experimentalist, C. A. Zavitz 851 



Department of held experiments. P. < ). Vanatter 854 



Experiments at Ploty in L904, I'. Troubetzkoy .. 855 



Reports from government farms in East Africa Protectorate for 1904 855 



Report of Burdwan Experimental Farm. 1903-4, D. N. Mookerji 855 



Report of Dumraon Experimental Farm, 1903 t, D. N. Mookerji. 856 



Successful yields of small grains, < i. W. ( "arver 856 



Lod-ed grain. R. Har.ourt 856 



Nutrients taken up by plants in different stages of growth, II. Wilfanhet al 856 



Alfalfa, G. A. Billings. . 



Inoculation and cultivation of alfalfa, A. M. S rale ami M. Ferguson x ~>? 



Impne ement of corn in Connecticut . E. M. East . 857 



Methods of testing variability in corn, E. Davenport 857 



Corn improvement . A. T. Wiancko 857 



Corn selection, P. W. Card and M. A. Blake 



Chemical studies of hops in L904, J. Satava 



The book of the potato, T. W. Sanders . 



Rice growing in Arkansas, W. G. Vincenheller 858 



Sugar beet industry. R. Harcourt 858 



Promoting the initial growth of the sugar beet, A. Cserhgti 859 



Sugar and the sugar cane, N. Deerr 859 



Report of Samalkot experimental sugar farm, L903 t, C. A. Barber 859 



Results of experiments with varieties of canes. J. B. Harrison 859 



