CONTENTS. Ill 



Page. 



I >bservations on soil temperatures during the years L896-1899at Mustiala Agri- 

 cultural and Dairy Institute, T. Cannelin and L. Stenback 29 



Formation of nitrous arid in the air confined in arable soil, F. Sestini 29 



Formation of nitric acid and nitrification as a chemical process in cultivated 



soils, F. Sestini - _".i 



Recent progress in soil bacteriology, J. Behrens 29 



FERTILIZERS. 



Fertilizer trials on Swedish moor soils, 1900-1902, H. von Feilitzen 30 



Some lessons learned from experiments with fertilizers, W. Saunders .'il 



Statistical method of making Held experiments with fertilizers, T. Pfeiffer 31 



Plant food and use of fertilizers, A. L. Knisely 31 



Contribution to the knowledge of metaphosphates, F. Warschauer 31 



Fertilizing value of dried superphosphates, A. Gregoire and J. Hendrick 32 



Contribution to the study of phosphatic slag, A. Gregoire and J. Hendrick 32 



Influence of liming on the availability of phosphoric acid, B. Schulze 32 



Influence of liming and marling on yield of vetches, R. Ulbricht 32 



Function of sodium when used in nitrate of soda, II. J. Wheeler et al .'.l' 



Influence of depth of application of straw, C. von Seelhorst and W. Freckmann. 33 

 Influence of applications of strawy manures, C. von Seelhorst and W. Freck- 

 mann :;:; 



The value of straw ash, E. Herrmann, E. Hotter, and J. Stumpf :!.'i 



Nitrifying organisms, F. Boullanger and L. Massol :v,\ 



Analyses of fertilizing substances sent on for free examination, C. A. Goessmann. .">4 



Commercial fertilizers, P. Schweitzer 34 



Inspection of fertilizers in 1903, F. W.Morse .".4 



Miscellaneous analyses, B. L. Hartwell, A. W. Bosworth, and .1. W. Kellogg. ."»4 



Commercial fertilizers .14 



Fertilizers licensed for sale in Wisconsin in 1904, F. W. Woll and < ;. A. < llson. .'!4 



FIELD (HOPS. 



( '< M >perative experiments in agriculture, C. A. Zavitz 34 



Culture experiments in 1902-3, A. Damseaux ::ii 



Experiments with leguminous plants at Danish State plant experiment sta- 

 tions, 1880-1899, N. P. Nielsen 37 



( 'rops grown on moor soils in different parts of Sweden, II. von Feilitzen 38 



Experimental stations, E. Clifton, F. Gillanders, et al 38 



List of Philippine agricultural products and liber plants, F. Lamson-Scribner . 38 



Selection of varieties for special climatic and soil conditions, W. Beseler MS 



Experiments with grain and forage plants, 1899-1903, R. A. Moore 39 



( 'anses of silage fermentation 39 



Improving quality of brewing barley of this country, R. Wahl 39 



Chemical composition of beans, R. Bolliger .">!> 



Clover, F. W. Card and A. E. Stene :\\) 



Effect of a lack of potash on clover and timothy, II. von Feilitzen 40 



Selecting and preparing seed corn, P. (I. Holden 40 



Sea Island cotton in United States and West Indies, D. Morris and J. R. Bovell. 41 



Influence of manganese salts on flax, Y. Fukutome 41 



Maguey in the Philippines, H. T. Edwards 41 



Comparative value of different varieties of mangels, T. Remy 41 



Breeding oats resistant to lodging, A. Kirsche 41 



Ten experiments with potatoes, E. W. Rane and FI. F. Hall 42 



Variety tests with potatoes, A. Rindell 42 



Practical application of manganous chlorid in rice culture, K. Aso 42 



Stimulating action of manganese upon rice, M. Nagaoka 4^,4.'! 



Progress of the beet-sugar industry in the United States, < '. F. Saylor 4.'! 



Experiments with sugar beets 44 



Effect of artificial fertilizers on the quality of sugar beets, M. Weibull 44 



SuL r ar-cane experiments in Cuba, E. F. Atkins 44 



Su^ar-cane experiments in the Leeward Islands, 1902-3, F. Watts 44, 45 



Report of agricultural work, 1901-1903, J. P. d' Albuquerque ami J. U. Bovell. . 45 



Tobacco work in 1903, E. H. Jenkins 46 



Notes on the culture and handling of tobacco 46 



