ANIMAL PRODUCTION. 



567 



enter iu, uor did that of fatigue. Individual idiosyncrasies were comparatively 

 slight. In the opinion of tlie authors, the optimum temperature for marching 

 may vary between 37.8° and 38.3° C. Similar observations made with subjects 

 riding bicycles and playing squash rackets showed much the same general 

 results. Data obtained with soldiers in India are discussed and compared with 

 the experiments reported. 



How to prevent typhoid fever, L. W. Page, J. R. Mohler, and E. F. Smith 

 (U. 8. Dept. Agr., Farmers' Bui. Jf78, pp. 8). — This is a statement of the nature 

 of typhoid fever and the means of preventing it, and was originally prepared 

 with special reference to the needs of employees of this Department in field 

 service. Antityphoid vaccination as a method of protection against the disease 

 is recommended for well persons exposed to field service conditions. 



ANIMAL PRODUCTION. 



On the value of feeds of animal origin for herbivorous animals, F. Hon- 

 CAMP, B. GscHWENDNER and D. Engbebding (Landw. Vers. Stat., 75 {1911). No. 

 3-4, pp. 161-184). — This reports digestion experiments in feeding animal prod- 

 ucts, such as fish and meat meals, to sheep, with clover hay as a basal ration. 

 The following table gives the percentages of air-dry matter and the coefhcients 

 of digestibility of the feeds used : 



Analyses and digestion coefficients of aninml products. 



Kind of meal. 



Herring meal (dry matter 



basis) 



Whale meal (dry matter 



basis) 



Meat meal, I (dry matter 



basis) 



Meat meal, II (dry matter 



basis) 



Blood meal (water insoluble). 

 Blood meal (water soluble). 



Composition. 



Crude 

 protein. 



Per ct. 



58.30 



71.08 



54.48 



62.61 

 86.61 

 89.09 



Pure 

 protein, 



Per ct. 



56.28 



58.22 



40.54 



54.22 

 86.20 

 81.50 



Fat. 



Nitro- 

 gen-free 

 extract . 



Per ct. 



13.57 



23.74 



22.66 



8.80 

 .21 

 .62 



Per ct. 

 3.98 

 2.51 

 2.30 

 2.89 



Ash. 



Per ct. 



23.65 



2.94 



20.56 



25.70 

 4.38 

 2.52 



Coefficients of digestibility. 



Organic 

 matter. 



Per ct. 

 93.7 



51.0 



87.3 

 87.0 

 96.5 



Crude 

 protein 



Per ct. 



87.7 



75.1 



78.9 



84.1 

 86.4 

 %.5 



Fat. 



Per ct. 

 97.4 

 100.0 

 93.0 



100.0 

 100.0 



Nitro- 

 gen-free 

 extract . 



Per ct. 

 49.2 

 36.7 



On the utilization of dried yeast for preparing molasses feeds, O. Fallaua 

 {Osterr. Ungar. Ztschr. Zuckerindus. u. Landw., 40 {1911), No. 5, pp. 709- 

 714). — Analyses are reported of dried yeast and a mixture of dried yeast and 

 molasses. 



After standing 10 weeks there was no appreciable loss of nutriment in the 

 yeast-molasses mixture, and it is recommended for stock feeding. The analy- 

 sis of the mixture in a fresh condition in the proportions of 1 kg. of molasses 

 to 800 gms. of dried yeast is as follows : Water 13.71, pi'otein 20.81, amino 

 acids 8.19, fat 1.8, sugar 28.8, invert sugar traces, other nitrogen-free extracts 

 18.09, fiber traces, and ash 8.6 per cent. The methods of making these analyses 

 are also discussed. 



The toxic principle in cruciferous cakes, C. Brioux {Ann. Sci. Agron., 3. 

 ser., 6 {1911), I, Nos. 4, pp. 241-282; 5, pp. 321-337; abs. in Rev. Gen. Agron., 

 n. ser., 6 {1911), No. 8, pp. 317-319). — The optimum temperature for the pro- 

 duction of toxic substances in mustard cakes used in stock feeding was about 37° 

 C. It is iK)inted out that mustard cakes must be fed with discretion and 



