FOODS ANIMAL PEODUCTION. 477 



sirup," Frdhling and A. KdssiNG {Internat. Sugar Jour., IS {1900), No. n, pp. 317- 

 319). — A discusHioii of adulteration and the food value of the adulterant. 



Report on the olive oils of Tunis and the utilization of residues from oil 

 making, Milliau, Bertainchaud, and Malet {Bui. Dir. Agr. et Com. ITunin'], 5 

 {1900), Xo. 14, pp. 21-63, figs. 7). — The report contains statistics of the amount of oil 

 produced in Tunis, its value, methods of manufacture, analyses of different samples 

 of oil, and composition and value of oil residues for feeding and for fertilizers. 



Cider vinegar: Its solids and ash, R. E. Doolittle and W. H. Hess {Jour. 

 Amer. Chem. Soc, •J-2 {1900), No. 6, pp. 218-220). — The authors report upon adulter- 

 ated vinegars offered for sale which contain the normal amount of solids aiid ash. 

 The results of investigation into their character showed that in one case the vinegar 

 was composed of dilute acetic acid, glucose, and soda ash, and in another of acetic 

 acid, boiled cider, and lime. 



Baking powders, H. K. Miller {Florida Sta. Bui. 52, pp. 131-143). — Baking 

 powders of different classes are described and an examination of a number of sam- 

 ples of baking powder purchased in Flf)rida reported. 



Considering the poisonous properties of respired air, E. Formanek {Arch. 

 Hijy., 3S {1900), No. 1, pp. 1-66, fig. 1). — An extended review of previous work on 

 this subject is given together with the results of a number of experiments. The 

 principal deductions follow: In addition to carbon dioxid and water, the respired 

 air from the lungs of man and animals contains no poisonous substance, with the 

 exception of occasionally a little ammonia. This, however, is not a metabolic 

 product, but a product of decomposition in the mouth, especially when the teeth are 

 decayed or in the case of certain diseases. The presence of ammonia is sufficient to 

 account for the poisonous properties which other investigators have found in respired 

 air. The bad effects experienced in overcrowded rooms are discussed at some 

 length. They are not regarded as due to any single cause. 



The influence of certain alcohols, E. Laborde {Jour. Pharm. et Chem., 6. ser., 



10 {1899), pp. 484-4S8; PuhUr Health, 12 {1900), No. 12, p. 885) A definite 



quantity of coagulated egg albumen was digested with acid pepsin or alkaline trypsin 

 in the presence of 50 cc. of 20 and 5 per cent solutions of different alcohols, control 

 experiments being made with water. It was found that isobutyl alcohol, glycerole, 

 and malic acid, when present in small quantity, favored digestion with pepsin, and 

 that methyl alcohol had a slightly accelerating influence. But digestion was mark- 

 edly retarded by ethyl and propyl alcohol, lactic and tartaric acid, manitol, and 

 glucose. When trypsin was the ferment used methyl and isobutyl alcohols, glyce- 

 role, and glucose increased digestion, and ethyl and propyl alcohol, lactic, malic and 

 tartaric acids, and manitol diminished it. 



The quantitative effect of pepsin, J. ScHtJTz {Ztschr. Physiol. Chem., 30 {1900), 

 No. 1-2, pp. 1-1 4)- — Experiments are described which have to do with the quantita- 

 tive results obtained in artificial digestion by means of pepsin. 



Concerning certain quantitative relations in pepsin digestion, Huppert 

 {Arcli. Physiol. [Pfiilger'], 80 {1900), No. 8-10, pp. .^70-5;,^e).— Investigations carried on 

 by the author and E. Schiitz are reported. 



On the occurrence of proteolytic and amylolytic ferments in the contents 

 of the human colon, J. C. Hemmeter {Arch. Physiol. [Pfiiiger], 81 {1900), No. 4-5, 

 pp. 151-166). — An experimental study of the ferments which are found in feces. 

 Normal feces yielded an extract which digested dried pulverized blood fibrin and egg 

 albumin in alkaline or neutral solution, while but little if any reaction took place in 

 an acid solution. The amylolytic ferment found in the feces was active in an alkaline 

 solution but not in an acid solution. 



Concerning the organic phosphorus in feces from woman's milk and cow^s' 

 milk, P. MtJLLER {Zt.fchr. Biol., 39 {1900), Nj. 3, jip. 451-481). — Experiments are 

 reported with children fed mother's milk and cows' milk, with a dyspeptic 

 child fed cows' milk, with adult men consuming milk, with adult men consuming 



