186 EXPERIMENT STATION RECORD. 



Experiments on the behavior of iron in the human and animal body, IT. 

 Landau {Ztschr. Klin. Med. [Berlin], 40 {1902), No. 1-4, pp. 223-288; abs. in Ztschr. 

 Violet, a. Phys. Ther., 7 ( 1904), No. 9, pp. 514, 515). — A large number of experiments 

 led the author to conclude that inorganic iron salts were resorbed in the duodenum, 

 though under ordinary physiological conditions the amount absorbed is very small. 

 The form in which iron is stored and other related topics are discussed. Iron, it is 

 stated, is largely excreted through the lower portion of the intestine, and only a very 

 small amount through the kidneys. 



The final products of the peptic digestion of protein, S. Salaskine and Mme. 

 E. F. Kovalowskaia i'/Jmr. Russ. Fiz. Khim. Obsheh., 1), pp. 421-424; abs. 



in Bui, Soc. Chim. Paris, 3. ser., 32 {1904), No. '■>■ pp- 583, 584).— The results obtained 

 in the series of experiments reported confirm Hoppe-Seyler's. belief that crystalliz- 

 able bodies are formed from protein by the action of gastric juice. 



Experiments on autodigestion in solutions of liver proteids, F. Bottazzi 

 ( Bol. R. Accad. Med. Genova, 18 ( 1904), No. 3; abs. in Zentbl. Physiol, is ( 1904), No. 

 4. pp. 98-100). — The experiments were carried on with nucleo-proteids extracted 

 from liver. 



Concerning antialburnens, F. Rotarsky {Zhur. Russ. Fiz. Khim. Obsheh., 35 

 I inn.;), pp. 424, 425; abs. in Bui. Soc. Chim. Paris, 8. ser., 32 1 1904), No. 0. pp. 

 585). — Experiments are reported and discussed. 



Mucin as a bacterial product, L. F. Rettger {Jour. Med. Research, 10 {1903), 

 No. 1, pp. 101-108; reprinted in Studies Rockefeller Inst. Med. Research, l {1904), Art. 

 16). — Mucin ami an intermediate body, pseudomucin, were identified as products of 

 bacteria] action. 



Concerning the connection between lability and activity of enzyms, 0. 

 Loew {Arch. Physiol. [Pfluger], 101 (." 04), No. 1-2, pp. 05-110).— In the author's 

 opinion enzymic activity depends upon chemical or molecular lability, being very 

 probably due to the presence of keton and amido groups. This lability of the atomic 

 groups involves a condition of atomic motion which may be regarded as kinetic 

 energy. This would he maintained by the free atmospheric heat and increased by 

 artificial heat up to a certain point at which molecular rearrangement takes place. 

 These and other theoretical considerations are discussed in the light of experimental 



evidence. 



The regulation of heat by chemical means in man, J. E. Johansson i Skand. 

 Arch. Physiol., 16 {1904), No. 1-2, pp. 88-93). — A controversial and polemical article. 

 The author points out that man can endure a very low temperature without chemical 

 heat regulation if the muscles are perfectly quiet. If the cooling is carried far enough 

 the carbon-dioxid excretion increases; that is, a chemical heat regulation takes place. 



Testing the Sonden-Tigerstedt respiration apparatus, Tora Rosenberg 

 {Skand. Arch. Physiol., 10 {1904), No. 1-2, pp. 79-87).— The accuracy of the Sonden- 

 Tigerstedt respiration apparatus was tested by burning a lamp in the respiration 

 chamber, the conclusion being reached that the error due to the apparatus was only 

 ±0.76 gm. C0 2 . 



Concerning rye pollen and the poison in it which causes hay fever, Kam- 

 mann {Beitr. Chun. Physiol, n. Pathol., ~> {1004), No. 7-8, pp. 346-354).— The author 

 studied the constituents of rye pollen and their properties, identifying an albumin as 

 an active cause of hay fever. He recognized the fact that the pollen of other 

 graminese and some other plants also possess similar toxic bodies. 



ANIMAL PRODUCTION. 



The chemical composition and feeding value of rice products, C. A. Browne, 



Jr. (Louisiana Stas. Unl. 77, 2. ser., pp. 430- 4 '58, figs. 0). — The results of microscopical 

 studies of lice grain are reported, together with analyses of rice products and 

 adulterated rice brans, and the results of artificial digestion experiments and of an 



