II CONTENTS. 



BOTANY. 



Page. 



Report of the botanist, B. I). Halsted and J. A. Kelsey 442 



Change of the albuminoid substances in moldy fodders, M. F. Ivanov 442 



Mycorrhiza of forest trees and their symbioses with roots, G. F. C. Sarauw. . . 443 



The decomposition of dead leaves in the forest, E. Henry 444 



Fixation of atmospheric nitrogen by dead leaves in forests, E. Henry 444 



Enzym-secreting cells in seedlings of maize and dates, H. 8. Reed 444 



Studies on evaporation by purslane, E. B. Watson 444 



Metabolism products of peas attacked by Aspergillus niger, J. Kosjatschenko. . 445 



FERMENTATION — BACTERIOLOGY. 



Transformation and fixation of nitrogen by bacteria, J. G. Lipman 445 



Study of fermentation, I, E. H. Twight and C. S. Ash 445 



METEOROLOGY — CLIMATOLOGY. 



Meteorological chart of the Great Lakes, A. J. Henry and N. B. Conger 446 



Meteorological observations, J. E. Ostrander and G. W. Patch 446 



Meteorological and magnetic observations at Havana, 1903, L. Gangioti 446 



Meteorology of the spring of 1904 446 



Invariability of our winter climate, W. B. Stockman 446 



Climate of Missouri 447 



Rainfall in the agricultural districts, E. L. Fowles 447 



Weather forecasts from the humming of wires, R. DeC. Ward 447 



Fertility and frost, U. P. Hedrick 447 



Destructive floods in the United States in 1903, E. C. Murphy 447 



SOILS. 



Geology of Oktibbeha County, Mississippi, W. N. Logan 447 



The relation of smelter smoke to Utah agriculture, J. A. Widtsoe 447 



A new centrifugal soil elutriator, P. A. Yoder 448 



Effect Of soil sterilization upon development of plants, C. Schulze 450 



Artificial root for inducing capillary movement of soil moisture, L. J. Briggs 



and A. G. McCall 450 



Artificial root for inducing capillary movement of soil moisture, F. H. King.. 451 



Soil 'moisture studies, C. H. Kyle 451 



The mechanical analysis of soils, J. G. Mcintosh 452 



Micro-organisms of soil and human welfare, T. J. Burrill 452 



The comparative nitrifying power of soils, S. F. Ashby 452 



Some essential soil changes produced by micro-organisms, S. F. Edwards 452 



Soil management, E. W. Hilgard 452 



A contribution to the study of the culture of alkali soils, A. Guyader 452 



FERTILIZERS. 



Investigations relative to the use of nitrogenous materials, E. B. Voorhees... 453 



The use of fertilizers, E. B. Voorhees 453 



Extraction and industrial treatment of Peruvian guano, E. Leplae 453 



Sulphate of ammonia in agriculture, J. Graftiau 453 



Analyses of commercial fertilizers, 1903, W. H. Jordan, et al .' 453 



Analyses and valuations of fertilizers, J. P. Street et al 454 



Fertilizer analyses, F. W. Robison 454 



Analyses of commercial fertilizers and manurial substances, C. A. Goessmann. 454 



FIELD CROPS. 



Field experiments at Lauchstadt, W. Schneidewind et al 454 



Field experiments at Harper-Adams Agricultural College, Newport, Salop 456 



Field experiments [in Ireland] , 1903 457 



Reports of Danish state plant experiment stations, 1903, F. Hansen et al 458 



On the growing periods of crops in northern Norway, L. P. Nilssen 458 



Hawkesbury Agricultural College and Experimental Farm, G. L. Sutton 458 



Uncertainty of hay crop at agricultural college of Norway, G. Holtsmark 459 



Plan of culture trials at Danish plant experiment stations, 1904-5 459 



