380 



EXPERIMENT STATION RECORD. 



The greatest difference obtained in case of whole milk was 0.34 per 

 cent and in case of skim milk 0.13 per cent. The results are pro- 

 nounced highly unsatisfactory, and the adoption of uniform methods 

 of analysis is urged. — f. w. woll. 



G-erber's milk test (acid butyrometer), N. Engstrom (18deAllm. 

 SvensTca Landtbrulesmotet, Malmo, 1896. Lund, 1896, pp. 62-66).— Thirty- 

 nine comparative analyses of milk were made by the Gerber buty- 

 rometer and the Adams method. The average results obtained were: 

 Gerber's test, 2.89 per cent; gravimetric method, 2.90 per cent. The 

 maximum difference between the results by the 2 methods on the same 

 sample was 0.13 per cent, and between duplicates with the Gerber test, 

 0.15 per cent. By the Gerber method 83.3 per cent of the results came 

 within 0.05 per cent. The possible error arising from the amyl alcohol 

 used is shown, and it is recommended to check the results found with 

 new lots of amyl alcohol by gravimetric analysis or to buy alcohol only 

 from firms handling the test. — F. w. woll. 



Report of Swedish chemical control stations for 1895 (Rpt. 

 Royal Swedish Agl. Dept., 1895, pp. 250-275).— The 7 State control 

 stations l in operation in 1895 examined in all 36,732 samples during 

 the year, four- fifths of which were dairy products. 



The report gives a discussion of the results of the examinations, with 

 average data for the various kinds of soils, fertilizers, feeding stuffs, 

 etc., analyzed. The analyses of milk made at the Vesteras chemical 

 station are sufficiently numerous to show the changes in Swedish herd 

 milk throughout the year : 



Monthly averages for Swedish herd milk — Vesteras station. 



Month. 



January. 

 February 

 March .. 



April 



May 



June 



July 



Month. 



August ! 



September 



October 



November 



December 



Average for year 



Number 

 of sam- 

 ples. 



1,464 

 1,217 

 1,365 

 1,441 

 1,369 



16, 185 



Average 

 fat con- 

 tent. 



Per cent. 

 3.55 

 3.41 

 3.52 

 3.44 

 3.43 



3.42 



The effect of narrow and -wide rations on the quantity and 

 cost of milk and butter, and on the composition of milk, J. B. 

 Lindsey, E. B. Holland, and G. A. Billings (Massachusetts Hatch 

 Sta. Rpt. 1896, pp. 100-125). — Two experiments comparing wide and 

 narrow rations were made with 6 cows divided into 2 uniform lots of 

 3 each. The first experiment began October 24 and continued 52 days. 

 It was divided into 2 periods of 26 days each. 



The cows were fed a basal ration of hay and sugar beets. In addi- 

 tion, during the first period one lot was fed wheat bran and Chicago 



'Jonkoping, Kalmar, Halmsted, Skara, Orebro, Vesteras, and Hernosaud. 



