FOODS — HUMAN NUTRITION. 167 



Food economy (Bui. Kans. Bd. Health, 7 {1911), No. 2, pp. 36-45, chart 1). — 

 In connection with this general discussion of food and the principles of nutri- 

 tion data are summarized in chart form regarding the amounts of nutrients 

 and energy which can be purchased for 10 cts. in a number of food materials, 

 the values being based on prices current in Topeka, Kans., June 20, 1910. 



Food and efficiency of the rural population, J. Kaup (Erndhrung und 

 Leienskraft der Ldndlichen Bevolkcrung. Berlin, 1910, pp. VIII+576). — Sta- 

 tistical and sociological data have been collected for the different German 

 provinces and similar information for a number of other countries is briefly 

 summarized. 



In the concluding section the author discusses such subjects as changes 

 which have taken place in the dietary habits of the rural population ; the utili- 

 zation of milk and milk products in town and country districts; the insuflB- 

 ciency of the national milk supply and means of increasing it, notably by an 

 increased importation of butter; and the dissemination of information on 

 hygiene in country districts. In general, he indicates that the admitted physi- 

 cal deterioration of the rural population which he is considering is in large 

 measure due to the smaller amoimts of milk and milk products now consumed 

 and the substitution for them of less nutritious or even harmful materials, 

 such conditions being due to the inadequacy of the general milk supply. 



The relationsliip of food to physical development, D. McCay {PhiUppine 

 Jour. Set., B. Med. Sci., 5 (1910), No. 2, pp. 163-170).— In this discussion the 

 author summarizes investigations reported in full elsewhere (E. S. R., 24, p. 

 568) in support of his theory that there is a close relationship between the 

 nutritive value of the diet, nnd i)articnlarly its protein content, and physical 

 development. This he believes is clearly brought out in a comparison of the 

 degree of nitrogenous interchanges of a number of native races, arranged 

 according to the amount of nitrogen per kilogram of body weight. At the head 

 of the list as regards physical development are the Nepalese Bhutias, with 0.42 

 gm., and the Tibetan and Bhotan Bhutias, with 0.35 gm.. respectively, of nitro- 

 gen per kilogram of body weight and with a large amount of animal food in the 

 diet, and at the bottom of the list are the Bengalis and Ooriyas, with 0.116 

 gm. of nitrogen per kilogram of body weight. 



The perils of low protein diets, A. Broadbent (Veg. Messenger and Health 

 Rev., 8. ser., 8 (1911), Nos. 3, p. 82; J,, pp. 123-125, chart i).— The author is of 

 the opinion that a low proteid diet does not favor lougevity and in proof of this 

 cites facts which he has observed through a long period with aged vegetarians, 

 A discussion follows the second paper. 



A contribution to the theory of protein metabolism, K. Schrage (Beitrag 

 zur Lehre vom Eiweissstofjwechscl. Inaug. Diss., Univ. Bern, 1909, pp. 15). — 

 Although the experiments reported, according to the author, did not lead to 

 general conclusions, they indicate that the nitrogen retained on a high protein 

 diet is not of necessity excreted again. 



Concerning the extractives of muscular tissue. — XI, A comparative study 

 of the nitrogenous extracts of veal and beef, W. Skworsow (Ztschr. Physiol. 

 Chem.. 68 (1910), No. 1, pp. 26-39). — The total amount of nitrogenous material 

 in the aqueous extract of beef and veal was much the same, ranging from 0.38 

 to 0.42 per cent, but there were differences in the proportions of the different 

 extractives present. 



Nitrogen partition in feces, H. Labb:^ (Compt. Rend. Acad. Sci. [Paris], 

 151 (1910), No. 19, pp. 822-82//).— By means of different extractives the author 

 studied nitrogen partition in feces. His results, in general, showed that of 

 the total nitrogen 45.25 per cent was soluble and 54.75 per cent insoluble. The 

 character of the portions extracted by different solvents is briefly considered. 



