992 EXPERIMENT STATION RECORD. 



Antiseptics and their use in the preservation of food, S. C. Prescott ( Tech. 

 Quart., 1.5 {IfJOJ), Xo. 4, ]>p. 3S.5-342). — Much matter regarding methods of preserv- 

 ing foods, condiments, and beverages is summarized and the use of preservatives 

 from the standpoint of hygiene is discussed. 



Are antiseptics occurring' in preserved foods harmful and should their use 

 be prevented? F. Bordas {Compt. Rend. 10. (Jong. Iidernat. Hyg. et Demogr., Paris, 

 1900, pp. 109-130). — In a paper presented before the International Congress of 

 Hygiene, Paris, 1900, the author considers the preservatives commonh^ used. Tlie 

 paper is followed by a discussion. 



The preservation of meat, L. Vaillard {Compt. Rend. 10. Cong. Internat. Hyg. 

 et Demogr., Paris, 1900, pp. 99-lOS) . — A report with discussion presented before the 

 International Congress of Hygiene, Paris, 1900. 



The cleavag-e of gelatin, P. A. Levene {Ztschr. Physiol. Chem., ,i7 {1903), No. 2, 

 pp. S 1-85). — Experiments are reported on the cleavage of gelatin liy a number of 

 digestive ferments. The resulting products were studied. 



The influence of alcohol on the metabolism of protein, R. Rosemann {Arch. 

 Physiol. [PfliJger], 94 {1903), No. 11-1,2, pp. 557-593).— X critical discussion of recently 

 published experiments. 



Hydrolysis of fats and oils by means of dilute acids, and some notes on 

 fat-splitting enzyms, J. Lewkowitscii {Jour. Sor. ('Item. Tnd., 33 {1903), No. 3, pip. 

 67-70). — Experiments are reported in which attempts were made to hydrolyse animal 

 and vegetable fats with hydrochloric acid, as well as tests in which lard was treated 

 with this acid, and zinc dust, and other substances which it was believed would 

 increase the ethciency of the acid, as the reaction seemed to be catalytic. Data are 

 also given regarding the sajionification of fat with ferments. A considerable amount 

 of fat was hydrolysed by the acid, the portion varying with the different materials 

 and under the experimental conditions. The su))stances added to the acid did not 

 increase its effectiveness. The paper is followeil by a discussion. 



Experiment on the excretion of carbon dioxid during static and negative 

 muscular work, J. E. Johansson and G. Koraen {Skand. Arch. Physiol., 13 {1903), 

 No. 3-5, pp. 239-350, figs. 3). — Using the apparatus and methods noted in a pre- 

 vious report (E. S. R., 14, p. 789), a number of experiments are reported with man in 

 which the respiratory quotient was determined when static and negative muscular 

 work were performed. The former term the authors apply to work with the ergom- 

 eter of such a nature that the external work was equivalent to zero. According to 

 the authors in the case of static and muscular work, the carbon dioxid excreted is 

 proportional within limits to the duration of muscular contraction. These and other 

 deductions are discussed in detail. 



ANIMAL PRODUCTION. 



The feeding value and digestibility of alfalfa, II. Snyder and J. A. Hummel 



{Minnesota Sta. Ilnl. SO, pjt. 173-17S, 180, figs. 3). — On the basis of composition the 

 feeding value of alfafa hay as compared with red clover hay is discussed, and ex2:)eri- 

 ments with 2 steers are rejaorted on the digestil)ility of green alfalfa and alfalfa hay 

 fed alone and with other materials, including a commercial stock food. The experi- 

 ments were made by the usual methods, specially constructed stalls being used which 

 facilitated the collection of solid and liquid excreta, the feeding being supervised by 

 G. Craig. The average results of the digestion exi)eriments follow, in every case the 

 results given being the average of 2 tests: 



