768 



EXPERIMENT STATION RECORt). 



1 of tannery scntcli, 1 of refnse lime, 3 of paper mill wastes, 1 of marl, 1 of gypsnm, 

 1 each of blast furnaco cinder and soot, 3 of innriate of potash, 4 of cotton-seed 

 meal, 2 of spoiled gluten meal, 2 of Natural Plant Food, and 1 each of tobacco stems 

 and suckers aro tabulated and discussed. 



Analyses of commercial fertilizers, H. J. AVheelek, B. L. Haktwkll, and C. L. 

 Sargent {Rhode Island Sta. Bui. 40, pj). 71-79). — Analyses and valuations of 60 samples 

 of fertilizers are tabulated. 



FIELD CROPS. 



Alfalfa, W. P. HeAdden {Colorado Sta. Bui. 35, pp. 3-95, vis. 18). — 

 This is a compreiiensive bulletin on the alfalfa plant, its culture, com- 

 position, structure, fertilizing value, vitality of seed, etc. 



Notes are given upon the history, description, culture, and varietal 

 differences of alfalfa. The author found very little difference between 

 3 French varieties grown at the station, but a variety from Turkestan 

 was distinct in habit and very uniform, growing erect with leafy and 

 numerous stems. 



Analyses were made of samples of the whole plant in different stages 

 of growth, of alfalfa hay, and of parts of the plant. 



The principal data are shown in the following table: 



Composition of alfalfa. 



' Not included in average. 



''Samples 8,9, 10, and 11 grown in drills. 



