CONTENTS. in 



Different degrees of availability of plant nutrients,. 0. Loe\* and I\. ^.so 20 



Can aluminum salts i in- tease plant growth? Y. Yamano l'»i 



Action of poison on plants, K. Verschaffelt 20 



Concerning cauliftorous flowers and fruits, L. Buscalioni 20 



Frost injuries of leaves, II. Solereder 21 



Physiological droughl in relation to gardening, I. B. Balfour 21 



Anthocyanin and its biological significance, P. Buscalioni and G. PollaccL... l'I 



Investigations on chlorophyll assimilation, < >. Pollacci l'I 



Importance of removal of products of growth in assimilation of nitrogen by 



organisms of root nodules <>!' leguminous plants, J. Golding 21 



Fungicidal action of fungus cultures, Y. Kozai and O. Loew •_'•_' 



Symbiosis between Azotobacter and Oscillaria, II. Fischer 22 



Relationship of Macrophoma and Diplodia, Julia T. Emerson 22 



Notes on the blackening of Baptisia tinctoria^ Julia T. Emerson l'l' 



FIELD CROPS. 



Report of rppr.- Peninsula Substation for 1904 [Field crops], L. M. Geismar. 22 



I foot systems of field crops, J. II. Shepperd l':; 



Hand hoeing of grains, K. KLubis 24 



The in fine ncc of seed, etc., on spring wheat and barley, II. von Feilitzen l'4 



Influence of fallow and pea culture <>n nitrogen balance of soils and growth of 



wheat. F. Wohltmann and P. Schneider 24 



Crops for the silo, \Y. J. Fraser 24 



Manurial experiments on permanent meadow land 25 



Ran^e management in the state of Washington, J. S. Cotton 25 



Alfalfa or hicern, R. A. Moore, A. L. Stone, and G. A. Olson 2.") 



Red clover from various sources, W. M. Munson L'li 



Directions for breeding corn, C. <i. Hopkins, L. II. Smith, and P. M. East... L'li 



Manuring of cotton, ( i. I\ Foaden 28 



Notes on bacteria active in flax retting, M. W. Beijerinck and A. van Delden. 28 



Selection of ^w>\ potatoes, F. Parisot 28 



Potato experiments at Pare des Princes, P. < irandean 28 



Degeneration of potatoes, P. Ehrenberg 28 



Degeneration of potato varieties, P. Tuckermann L'!i 



Commercial sugar-beet seed, .1. E. \Y. Tracy 29 



Single-germ beel seel. ( !. < >. Townsend 29 



Fertilizers and sugar beets, C. 0. Townsend. ill) 



Variety tests with sugar and fodder beets, J. Hansen and K. Hoffmann 30 



Progress of beet-sugar industry in United States in 1904, C. F. Savior :;i 



Beet-sugar factories in the United States and Canada :!1 



The beet-sugar industry of Wisconsin, F. W. Woll 31 



Culture of tobacco, G. M. Odium 



Tobacco investigations in Wisconsin for 1903 and 1904, E. P. Sandsten 32 



Tobacco investigations in Porto Rico during pio:;— 4, J. van Leenhoff, jr .">•_' 



Extermination of .Johnson grass, W. J. Spill man ;!4 



BOHTICULTUKE. 



Summary of experiments in practical horticulture, W. M. Munson .: I 



Report of Upper Peninsula Substation for 1904 [Horticulture], P. M. ( leismar. 35 



Asparagus culture in ( lalifornia, P. 1-'.. Smith .">r> 



Tomatoes, P. c. Corbett .".<> 



Pruning tomatoes, W. T. Macoun 36 



A few notes on ginseng, M. I [arrington :;7 



Planting-table for vegetables, P. P. Fullerton .".7 



( 'nit nre experiments carried out in 1904, .1. Klar and O. Mende 37 



The higher standard in American horticulture. I i. T. Powell :;7 



The progress of fifty years, P. IP Bailey 37 



Report of South Haven Substation for 1904, T. A. Farrand .">7 



Pomology as a study, P. P. Castle 38 



Food constituents used by bearing fruit trees, P. P. Van Slyke et al 39 



Plant-food constituents in fruits, vegetables, etc., P. P. Van Slyke et al 41 



Observations on the phenology Of plants at Ames. Charlotte M. King II 



Varieties of fruits in Thurgau in the year I '.to:',, P. Schwyzer-Reber 41 



New York apples, s. A. Beach '. 41 



