CONTENTS. Ill 



Page. 



Report on the clays of Maryland, H. Ries 19 



On the plasticity of clay, P. Rohland 19 



Mineral in Jamaica soils, E. Leuscher 19 



The Jurassic region of Belgium, A. Henry 19 



The effect of lime on the insolu))le phosjihates of the soil, W. F. Sutherst 19 



The minimum content of lime in soils which respond to liming, Lilienthal 19 



Tlu' calcitmi carbonate content of soils, M. Passon 19 



Irish soils, including the peat, G. II. Kinahan 19 



Causes of sterility in peat soils, J. Dumont 19 



Soil temperatures at Flahult Moor P^xperinient Station, H. von Feilitzen 20 



The I'omposition of soil samples froui moor lands, O. von Czadek 20 



Results of vegetation experiments on marsh soils, B. Tacke 20 



S( li 1 tests and variety tests, E. W. Hilgard 20 



Nitrification in different soils, W. A. Withers and G. S. Fraps 20 



Nitrogen oi humus, A. Dojarenko 20 



Humus and soil fertility, II. Snyder 21 



The chemical rule of earthworms, H. d' Anchald 21 



The Campbell method of soil culture, H. M. Cottrell 21 



Interior land changes 21 



FERTILIZERS. 



Organic nitrogen availability of fertilizers, C. H. Jones and B. O. AVhite 21 



Roots of plants as affected by manuring, C. von Seelhorst 21 



Manure from steers and swine, W. A. Henry 21 



Bacteriological investigations relating to nitrogen of manure, H. G. Soderbaum . 22 



The utilization of night soil as manure, R. S. Joshi 22 



On minerals occurring in Australian bat guano, R. W. E. Maclvor 22 



( i reen manuring on sugar estates 22 



The plowing under of green manures for winter plantings, Causemann 22 



Forty per cent potash salt v. kainit, M. Maercker and W. Schneidewind 22 



Field experiments with ammonium sulphate in the province of Posen, Kloepfer . 22 



Fertilizer experiments on moor soils, II. von Feilitzen 22 



Phosphatic fertilizers for moor soils, K. C. Lassen 22 



Better utilization of nitrogen supply of soil and air as a result of liberal appli- 

 cations of phosphoric acid, F. Giersberg 22 



The natural phosphates and their use in agriculture, Maizieres 23 



Slags and superphosphates — results of 10 years' experiments, E. C. Pradel 23 



The agricultural value of Martin slag, A. Petermann 23 



Discovery of mineral phosphates in South Australia 23 



Note on free acid in superphosphate, J. Ostersetzer 23 



Buying and using commercial fertilizers, L. A. Clinton 23 



The purchase of artiticial manures 24 



Fertilizers. I, Sources and composition, B. H. Hite 24 



Connnercial fertilizers, H. A. Huston and W. J. Jones 24 



Analyses of commercial fertilizers and Paris green, W. C. Stubbs 24 



Analyses of commercial fertilizers, J. L. Hills, C. H. Jones, and B. O. White. 24 



Commercial fertilizers, J. H. Stewart and B. H. Hite 24 



The new West Virginia fertilizer law, J. H. Stewart 24 



Regulations concerning sale of fertilizers, etc., in Finland, G. Grotenfelt 24 



Artificial manures in Russia 24 



Boiler scale,- E. F. Ladd 24 



FIELD CROPS. 



Report on field crops, J. H. Shepperd and A. INI. Ten Eyck 24 



Report of the botanist, H. L. Bolley 25 



Ex]ieriments with field crops, R. S. Shaw 26 



The Woburn field experiments, 1899 and 1900, J. A. Voelcker 27 



The Woburn pot-culture experiments in 1900, J. A. Voelcker 28 



The Essex field experiments, 1896-1901. I, Permanent pastures, T. S. Dymond. 28 



Field experiments at Ploti Agricultural Experiment Station, A. G. Karabetov. 29 



And farming or farming without irrigation, J. A. Widtsoe and L. A. Merrill. 29 



Lucern, B. Dyer 29 



Lucern growing as fodder for stock, E ancl O. Evans 30 



Overdressing of barley, H. Baird 30 



