II CONTENTS. 



The origin of species by mutation, D. T. MacDougal 226 



The rheotropism of roots, F. C. Newcombe 226 



The transformation of proteids during germination, G. Andre 226 



Observations on transpiration, C. C. Curtis 226 



Contribution to the chemistry of chlorophyll, E. Schunck 227 



The etiolation of plants, F. Noll 227 



The action of light on etiolated plants, H. Ricome 227 



Influence of temperature on absorption of minerals bv etiolated plants, G. 



Andre \ 228 



lIETEOKOLOCiY. 



Report of the meteorologist, W. H. Bishop 228 



Meteorological tables, T. S. Outram 228 



Rainfall variations 228 



Black rain in North Carolina, C. Baskerville and H. R. Weller 229 



Cyclones and agriculture, L. Dumas 229 



WATER SOILS. 



Waters 229 



The purification and sterilization of water, S. Rideal 229 



Subterranean hydrology of the region of Cadereyta Mendez, J. DeD. Villarello. 229 



Soil analyses, C. L. Penny 229 



The soils of Dorset, D. A. Gilchrist and G. A. Luxmoore 230 



Gooselands of Glenn and Colusa counties, California, R. H. Loughridge et al. . 230 



Study of the climate and soil of the Polder region of Belgium 230 



Investigation of soil sediments with regard to plant-food value, L. M. Tolman . 230 



Action of fertilizer salts on physical properties of soils, A. Mitscherlich 230 



The sugar beet as a reclaimer of arid and alkali regions, H. C. Myers 231 



Studies on distribution of lime in soils of vineyards, J. Dufour and H. Faes . . 231 



Occurrence and importance of soluble manganese salts in soils, E. E. Ewell . . 231 



Agriculture in its relations to bacteria and other ferments, H. W. Wiley 231 



Nitrates in cultivated soils, F. H. King and A. R. Whitson 231 



Determination and composition of humus, and its nitrification, C. Riml^ach . . 231 



Studies in soil bacteriology, F. D. Chester 232 



Elements of agricultural geology, P. McConnell 232 



FEKTII.IZERS. 



A study of the phosphorus nutrition of plants, T. Schloesing, jr 233 



The fertilizing value of deep stall and yard manure, M. Gerlach 233 



Action of nitrates and Alinit in presence of coarse manures, M. Gerlach 233 



Effect of manuring on milling property of grain, F. B. Guthrie, G. W. Norris. 233 



Preservation of manure Avith superphosphate-gyiDsum, etc., T. Pfeiffer et al. . . 233 



Conservation of cow dung, D. N. Mookerji 234 



On sawdust as fertilizer, G. Loges 234 



Chemical-agricultural investigations on fertilizing value of beans, E. de Cillis . 234 



Studies in denitrification, E. B. Voorhees 234 



By-product of ammonia and soda manufacture as fertiUzers, A. M. Grimm 234 



On the use of calcium carbid residue in agriculture, M. Gerlach 234 



Analyses of commercial fertilizers and manurial substances, C. A. Goessmann . 234 



Analysis of commercial fertilizers, J. L. Hills, C. H. Jones, and B. O. White 234 



Licensed commercial fertilizers, F. W. Woll and A. Vivian 235 



Fertilizers, T. Macfarlane 235 



Results of fertilizer control, 1900-1901, G. Thorns 235 



FIELD CROPS. 



The California Culture substations, C. H. Shinn 235 



Fertilizer experiments, C. H. Shinn 236 



Report on cultural tests in 1900, A. Damseaux 236 



Cooperative field trials with cereals, potatoes, etc., in Norway, B. Larsen 236 



Analyses of root crops at different times during storage, H. P. Larsen 236 



Chemical composition of some leguminous plants, H. G. Soderbaum 236 



