II CONTENTS. 



Page. 



New views on the indirect estimation of extract bodies, K. Farnsteiner 744 



( themical department, F. W. Traphagen 744 



Miscellaneous analyses, A. I.. Knisely 744 



Miscellaneous analyses, B. I.. Hartwell and J. YV. Kellogg 744 



Miscellaneous chemical work, F. W. Woll, G. A. Olson, and J. ('. Brown 744 



Cellulose, cellulose products, ami artificial rubber, .1. Bersch 744 



Laboratories of the chemical department, F. W. Woll 74"i 



International catalogue of scientific literature. 1> — ( !heinistry 745 



bi n \\v. 



Species and varieties: Their origin by mutation, H. de Vries 745 



Two types of intramolecular respiration of higher plants, A. I. Nabokikh 745 



Transformation of nitrogen* ms substances in ripening of seeds, X. 1. Vasilyev. 746 



Study of the variation of seeds during ripening, < r. Andre ' 746 



< rolden seal. Aliee Henkel and < r. F. EQugh 747 



Barley grass, J. II . Maiden 747 



Phosphorescent plants, II. Molisch 747 



Drift sand reclamation in Australia 747 



The biology of Sterigmatocysiis versicolor, II. Coupin and J. Friedel 747 



Some spontaneous variations of Sterigmatocystis versicolor, P. Vuillemin 748 



FERMENTATION — BACTERIOLOGY. 



Soil bacteria and nitrogen assimilation, F. D. ( ihester 748 



The assimilation of free nitrogen by bacteria, G. S. Fraps 748 



Bacteria and yeasts in their relations, F. Kienitz-Gerloff 74 ( .t 



Act imi of metallic alkaline earths on yeasts, N. ( '. Paulesco 749 



Laboratories in agricultural bacteriology, II. L. Russell 74!) 



METEOROLOGY — CLIMATOLOGY. 



Meteorological observations at Michigan Agricultural College for 1903 750 



Meteorology, C. YV. NorrisandT. M. Carpenter 750 



Report of the meteorologist, X. Helme 750 



Meteorology 750 



Rainfall, H. S. Lawrence 751 



Sunsj nits and rainfall. R. DeC. Ward 751 



Influence of the forests of the Landes on the rainfall, E. Man-hand 751 



The influence of cannonading <>n snow storms 751 



The moon and the barometer, A. B. McDowall 751 



Summer night frosts in Sweden. 1871-1900, H. E. Hamberg 75] 



Importance of nitrogen of air and soil in plant production, Lohnis 751 



WATER — SOILS. 



Microscopic examination of State College water supply, W. A. Buckhout 751 



Soil water * 751 



Summer fallow and the conservation of moisture in the soil, A. L. Knisely 752 



Contributions to our knowledge of the aeration of soils, E. Buckingham.*. 752 



Ohio soil studies. I. A. D.'Selby and J. W. Ames 752 



Studies of muck and peat soils. A. R. Whitson ami C. YV. Stoddart 755 



On the structure of cultivated soils, A. I telage and H. Lagatu 756 



Mineral constituents of cultivated soils, A. Delage and II. Lagatu 756 



( institution of cultivated soils. A. Delage ami II. Lagatu 756 



Soil analysis as a guide to manurial treatment. T. B. W 1 and R A. Berry... 756 



Relation of yield to the water-soluble plant food in soils, F. II. King ' 757 



Soils, waters, and mineral products of the region of Chari. A. Hebert 757 



Preventing soil washing, A. M. Soule 757 



Utilization of salt land. W. L. Summers 757 



Culture of the Landes, E. Leroux 757 



Studies in nitrification, G. S. Fraps 757 



Nitrifying power of North Carolina soils, W. A. Withers and G. S. Fraps 757 



Nitrification of different fertilizers. W. A. Withers and <.. S. Fraps 757 



Nitrification of ammonia fixed by chabazite, YV. A. Withers and (.. s. Fraps. 758 



The nitrification of the ammonia of the soil, L. < irandeau 758 



Experiments on nitrification of various nitrogenous fertilizers, L. Grandeau... 758 



