1917] ANIMAL PRODUCTION. 865 



and 1916. It contains the report of the district inspectors, the results of the 

 testing of weights and measures, and extracts from laws, regulations, etc. 



Cleaning silver by contact with aluminium in alkaline solution, H. L. 

 Lang and C. F. Walton, Jr. (Jonr. Home Econ., 8 (1916), No. 8, pp. 418-421).— 

 A brief report of the experimental work, which has been noted in full from 

 another source (E. S. R., 36, p. 266). 



[Report on] nutrition, T. B. Osborne and L. B. Mendel (Carnegie Inst. 

 Washington Year Book, 15 (1916), pp. 365-S72). — This is a progress report 

 (E. S. R., 34, p. 762) of an investigation by the authors of the relative nutri- 

 tional value of different vegetable proteins. This included studies of the 

 value of the proteins of corn and cottonseed products and the food hormones 

 of yeast, as well as further investigations of protein-free milk. The results of 

 most of these experiments have been noted from the original sources. 



Lectures on nutrition delivered under the auspices of the Washington 

 Academy of Sciences, Washington, D. C, 1916 (Washington, D. C: Wash. 

 Acad. Sci., 1916, pp. [78], fig. 1). — This pamphlet contains reprints of the fol- 

 lowing five lectures, previously noted : The Biochemical Analj'sis of Nutrition, by 

 C. L. Alsberg (E. S. R., 35, p. 368) ; The Basal Energy Requirement of Man, by 

 E. F. DuBois (E. S. R., 35, p. 371) ; Food Economics, by G. Lusk (E. S. R.. 35, 

 p. 558) ; Studies on the Mineral Elements in Animal Nutrition, by E. B. Forbes 

 (E. S. R., 35, p. 867) ; and The Importance of Vitamins in Relation to Nutrition 

 in Health and Disease, by C. Voegtlin (E. S. R., 35, p. 861). 



Studies in the physiology of the respiration. — I, The capacity of the air 

 passages and the percentage of carbon dioxid in the alveolar air during rest 

 and exercise, R. G. Pearce (Amer. Jour. Physiol., 43 (1917), No. 1, pp. 73-86, 

 fig. 1). — The author proposes methods for calculating the dead space and the 

 percentage of carbon dioxid in the expired alveolar air, for which the necessary 

 data are obtained by determining the amount of air and the percentage of 

 carbon dioxid in the air of a normal and a deep expiration. Using these 

 methods, only a small variation in the dead space or the percentage of carbon 

 dioxid could be determined between the conditions of rest and exercise con- 

 sisting of walking at the rate of Si miles per hour. 



Review of recent literature on conditions of abnormal metabolism, in in- 

 fants, J. L. Gamble (Amer. Jour. Diseases Children, 13 (1917), No. 4, PP- 362- 

 889). — A summary and digest of recent contributions to the literature of acute 

 and chronic disturbances of nutrition, acidosis, rickets, scorbutus, etc. 



ANIMAL PRODUCTION. 



[Nutrition investigations at the Wisconsin Station] (Wisconsin Sta. Bui. 

 275 (1917), pp. 8-12, 13-17, figs. 7). — Notes on several studies are given. 



Causes of bad effects of excessive tcheat feeding, by E. B. Hart et al.^ 

 Earlier experiments (E. S. R., 33, p. 367) have shown that excessive feeding of 

 wheat is decidedly injurious to cattle and swine. Further trials show that the 

 effect of wheat feeding on the breeding capacity of cows is cumulative. No ill 

 effect was apparent from such rations during the first gestation period, but 

 when they were fed for two consecutive gestation periods or longer the offspring 

 were born blind or weak. In other tests a ration containing a considerable 

 amount of wheat embryo, but otherwise satisfactory, fed for only 60 days before 

 parturition resulted in a characteristic weakness in the offspring. 



Experiments with swine and rats indicated that the wheat embryo contains 

 proteins of excellent character for growth, a large amount of the diet necessity 

 water soluble B and a moderate amount of -fat soluble A. Besides being defi- 

 cient and unbalanced in mineral matter, however, wheat embryo contains a dis- 



