19161 FOODS — HUMAN NUTRITION. 63 



milled cereals or other cereal foods lacking the outer seed coats and too little 

 use of milk and vegetahles." 



Fluorin in the vegetable kingdom, A. Gautier and P. Clausmann {Compt. 

 Rend. Acad. ScL [Paris], 1G2 {1916), No. 3, pp. i 05-1/2). —Analytical data are 

 given showing the quantities of phosphorus and fluorin found in many different 

 kinds of vegetables. The following amounts of fluorin, in milligrams, were 

 found present in 100 gm. of the dry substance : The pulp of apple, 0.21 ; the skin 

 of apple, 2.78 ; the pulp of banana, 0.38 ; the skin of banana, 5.1 ; wheat flour, 

 1-1.41 ; rye flour, O.G ; buckwheat flour, 2.53 ; barley, 2.2 ; rice, 0.94 ; white beans, 

 2.1 ; lentils, 1.8 ; mustard, 1.58 ; chocolate, 1.78 ; and green coffee, 1.45. 



Further studies of nitrogen metabolism, E. Abdekhalden {Hoppe-Seyler's 

 Ztschr. Physiol. Chem., 96 (1915), No-. 1-2, pp. 1-14T)- — The results are reported 

 of an extensive investigation of the nutritive value of amino-acid mixtures, some 

 of which Avere derived from naturally occurring protein and some from sources 

 foreign to animal tissue. The biological value of tryptophan, tyrosin, phenyl- 

 alanin, and other amino acids was studied, and also the influence of the inges- 

 tion of potassium nitrate, ammonium salts, urea, and sodiiim acetate upon nitro- 

 gen metabolism. Numerous feeding experiments were conducted with labora- 

 tory animals (rats). For details of the investigation the original should be 

 consulted. 



The influence of the amino acids on the pancreatic secretion, S. Kobzaeenko 

 (Intcrnat. Beitr. Path. u. Ther. Erndhrnngsstor. Sloffw. u. Yerdaxiung shrank., 

 5 {1915), No. 4, pp. 434-457). — Feeding experiments with laboratory animals 

 (dogs) are described, in which mixtures of amino acids prepared from various 

 sources were ingested and the resultant effects on the pancreatic secretions 

 studied. An extensive bibliography is appended. 



The influence of protein feeding on the elimination of creatin in starva- 

 tion, W. C. Rose {Jour. Biol Chem., 20 {1915), No. 4, Proc, p. X/X).— Experi- 

 ments with normal men indicate that the feeding of large amounts of protein 

 causes a marked diminution in the creatin elimination during starvation. As 

 this is not true in severe cases of diabetes or in depancreatized dogs, the author 

 concludes that the disappearance of creatin from the urine, following protein 

 feeding, is due to the carbohydrate metabolized from protein. 



The excretion of creatin during a fast, F. D. Zeman and P. E. Howe 

 {Jour. Biol. Chem., 20 {1915), No. 4, Proc., p. Xrill). — The determination of 

 creatin in the urine of a fasting man throughout a 7-day fast showed that cre- 

 atin was excreted on each fasting day in amounts comparable in most cases 

 with those obtained in previous fasts under similar conditions. 



The synthetic capability of the animal body, W. Stepp {Ztschr. Biol., 66 

 (1916), No. 8, pp. 350-358). — From the experimental data herein reported the 

 author concludes that the bird and animal organisms difl'er, in that the body of 

 the pigeon can do without lipoids in the diet, though not without vitamins, 

 while the animal organism requires both of these food constituents. 



Is the nutritional disease produced by lipoid starvation identical with 

 beri-beri? W. Stepp {Ztschr. Biol., 66 {1916), No. 8, pp. 339-349) .—In a series 

 of feeding experiments with laboratory animals (mice) the effect of ingesting 

 diets deficient in either vitamins or lipoids was studied. 



The conclusion is drawn that a lipoid-free diet can be made complete only 

 by the addition of lipoids, and that it can not be made sufficient by supplying 

 other accessory nutrients such as vitamins. Similarly, a vitamin-free diet can 

 be made sufficient only by the addition of vitamins. 



Diet and pellagra. Babbits and hares as a possible dietary factor in com- 

 bating the disease, C. W. Stiles {Pub. Health RiJts. [U. S.], 31 {1916), No. 13, 

 pp. 817, 818). — The author suggests the possibility of the use of rabbits and 



