828 EXPERIMENT STATION RECORD, 



development diminishes, reaching a maximum at the time when alisolute 

 sterility is attained. The chemical changes which take place in milk, wine, 

 beer, etc., after sterilization are to be attributed in part at least to the results of 

 arrested spore development. The author says that the liquefying and sacchari- 

 fying action which is acquired by albumin under the influence of metallic acids 

 is to be explained by the constant presence of spores of B. subiilis in the albumin 

 and not, as has been repeatedly claimed, by the appearance of artificial diastases. 



FIELD CROPS. 



Results obtained in 1906 from trial plats of grain, fodder corn, field 

 roots, and potatoes, W. and C. E. Saunders (Canada Cent. Expt. Farm. Bill. 

 55, 'Pp. 35). — The results secured in 190G in variety tests conducted at the Canada 

 experimental farms with the different field crops are given in tabular form with 

 brief general notes. The reports of earlier years have been previously noted 

 (E. S. R., 17, p. 961). 



The testing of different varieties on uniform trial plats has now been in 

 progress for 12 years, but this bulletin departs from previous reports in omit- 

 ting the averages of the returns from all the experimental farms. The tables 

 are so arranged as to show the varieties in the order of their average yield for 

 the last it years. 



Is the protein content of "barley a variety characteristic? H. Tedin 

 (>S'r(1///r.s- itsadcsf*'!'- '/'/r/.s7,r., 16 H'JOG), Xo. //, pp. 171-1S7). — The results of 

 proteiu determinations in Swedish malting barley secured from .1899 to 1904 

 showed variations ranging generally from 2 to 4 per cent in all the varieties 

 analyzed. Some samples of each variety tested were found to contain over 11 

 per cent of protein. The maximum content, 15.14 per cent, was obtained in a 

 sample of Svanehals, and the minimum, 7.23 per cent, in a sample of Princess. 

 On an average Princess contained about 1 per cent less protein than Chevalier. 



The author concludes that the variety is of minor importance in determining 

 the protein content of barley, and that this factor depends mainly upon condi- 

 tious of culture and growth. — v. w. woll. 



Corn culture, R. J. Redding and J. M. Kimbrough (Georgia ^ta. Bill. 74, 

 pp. W5-20S). — The 10 varieties compared during the season of 1906 gave an 

 average yield of 2.J.13 bu., Marlboro Prolific and Cocke Prolific leading with 

 28.60 and 28..50 bu. per acre, respectively. Marlboro stood second in 1905. 

 Hastings' Prolific, which made the smallest ears, ranked sixth this year, while 

 Marlboro, which gave the third smallest ears, stood first. Henry Grady, mak- 

 ing the largest ears, ranked fifth in the total yield of shelled corn per acre. 

 From these results it appears " that there seems to be no very significant rela- 

 tion between the total yield and the size of the ears." 



A comparison of cotton-seed meal and crushed cotton seed as a fertilizer for 

 corn resulted in a yield of 24.56 bu. per acre on the cotton-seed meal plats and 

 of 22.05 bu. on the crushed cotton-seed plats. Cotton-seed hulls were found not 

 only ineffective as a means of increasing the yield of corn in the current year, 

 but even actually reduced it. This material is considered too valuable as 

 cattle feed to be used as a fertilizer. As in former years dividing the applica- 

 tions either of cotton-seed meal or nitrate of soda, applying one-half before 

 planting and the rest as late as either May 1 or May 20 was found inexpedient. 



Brief notes on corn culture based on the results seciu'ed in 17 years of experi- 

 ments conclude the bulletin. 



Williamson method of corn culture, ,T. F. Duggar and 1.. N. Duncan (Ala- 



" hania Col. Sta. Bill. i.J.S', pp. 102-106, fl</s. 2). — A comparison is reported of the 



Williamson and ordinary methods of growing corn. A plat was devoted to eacll 



