CONTENTS. Ill 



i'age. 



The decrease of tenii>erature with altitude, M. Moreno y Anda :^39 



Daily variations in meteorological elements of atmosphere, L. Teisserenc de 



Bort 339 



Hail shooting in Lower Austria, 1900-1901, J. von Jablanczy 339 



Firinijj to prevent liail, E. Vidal - - - 339 



Fog studies, A. G. McAdie - - - - 339 



Short i^eriod solar and meteorological variations, N. and W. Lockyer 339 



The atmosphere, J. W. Lee - - 339 



A new organic gas of the atmosphere, H. Henriet - . . - 339 



X'erification of the law of barometric heights, W. de P'onvielle 339 



Observations on the climatology of Mexico, T. L. Laguerenne 339 



WATER SOILS. 



Experiments in evaporation, C. B. Ridgaway 339 



The jirogress in the field of ehemistry of waters, A. Goldberg 340 



The bacteriological analysis of drinking waters, Bordas 340 



Report for 1901 of the Agricultural Experiment Station of Ploti 340 



On tlie cpiestion of the productiveness of different soil layers, 8. tStschusses . . . 341 



Comments on the above paper, D. Rudsinsky 341 



On the water-soluble phosphates of the soil, T. Schloesing, jr 341 



Influence of frost on the physical iiroperties of soils, A. Mitscherlich 341 



On the question of the mechanical analysis of soils, P. Kaschinsky 341 



\'egetation boxes for studying the water content of soils, C. von Seelhorst 341 



Analysis of the soil by the plant, T. Lokot 341 



Nitrifying alnlity of normal soils and loss of nitrates, A. Y. Klyucharev 342 



The crop and the soil in their mutual relations, S. Bogdanov 342 



Practical exi)eriments in the restoration of worn-out soils, R. F. Schwar/, 342 



The purpose of a soil survey, !M. Whitney 342 



FERTILIZERS. 



The action of the solid constituents of stall manure, M. Gerlacli 342 



A new method of conserving manure and urine, P. Rippert 342 



Manures and manuring, O. Lemmermann 343 



Commercial fertilizers, W. W. ]\Iiller and N. W. Lord 343 



Analysis of commercial fertilizers sold in Maryland, H. B. JNIcDonnell et al. . . 343 



Fertilizer analyses, R. C. Kedzie 343 



Availability for plants of jjhosphoric acid of mineral phosphates, P. Kossovich . 343 

 Relation between amounts of phosphoric acid and ammonia in plants, H. 



Pellet 343 



Ammonia salts as a source of nitrogen for plants, P. Kossovich 343 



The solvent action of ammonia salts on phosphorites, I. Shulov 343 



The action of nitrogen in absence of other nutritive substances, H. Wilfarth. . 344 

 Effect of nitrates and humus on nitrogen assimilation, F. Xobbe and I.. 



Rit'hter .">44 



I'erchlorate of potash in plant growth, L. Grandeau 344 



FIELD CROPS. 



Influence of environment on the chemical composition of plants, H. W. Wiley. 344 



Influence of fertilization on roots of different plants, C. von Seelhorst 345 



Relation of different crops to water content of the soil, C. von Seelhorst 345 



Progress in plant and animal l)reeding, \V. INI. Hays 346 



The length of the growing season in North Dakota, E. V. Ladd et al . . . . i 346 



Annual report of Bnnlwan Experimental Farm for 1900-1901, D. N. ^lookerji. 346 



Experiments with field crojis 346 



Report on work at Provincial Experimental Garden at Ghent, P. de C.duwe. . 346 



The management and improvement of the range, E. Nelson 347 



I)evelo])ment of roots and shoots from the nodes of cereals, C. von Setihorst. . 347 



The influence of fertilizers on the form of cereal plants, H. Clausen 347 



Changes of nitrogenous substances in cereals during ripening, N. Nedokutscha- 



jew 347 



Alfalfa, F. E. Emery 347 



Breeding and cultivation of barley for brewing purposes, Remy 347 



The culture of forage beets in different sections of France, P. V. Dehcrain 347 



Forage beet culture at Grignou in 1900 and 1901, P. P. Deherain and C. Dupont .. 348 



