ANIMAL PRODUCTION. 775 



The utilization of potatoes {Jhrnavirlnvcli; Lnrnhv. Ztg., 69 {1901), No. 51, pp. 

 21-i, -'lo). — The {M)ssil)ilitv of |)r()lital)ly feeding potatoes when they are low in price 

 is (liscussetl, and directions given for feeiling them to different farm animals. 



Milk-molasses feed {Braumchweig Landw. Ztg., 69 [1901), No. 51, p. 316). — A 

 brief account of the nature and uses of a feed made from molasses and the albumin 

 and ca^'Jein of skim milk. 



On the feeding value of seaweeds, P. R. .Sollieo {T'uUakr. Norake Landbr., 8 

 {1901), No. 1, pp. 13-30). — Chemical analyses are given of samples of Fucus, Lami- 

 naria, and Parcophyllis species, with a discussion of their value as feeding stuffs, and 

 a bibliography on the subject. — f. w. w^oll. 



Rice ensilage {Queensland Agr. Jour., 9 {1901), No. 4, p- 415). — A brief note is 

 given on the successful use of rice for silage. The crop was cut when the rice was in 

 the ear but before the grains had begun to harden. 



On the physiological valuation of nutrients — animal metabolism, H. 

 IsAACriSKX {Ttdsskr. Norske Lumlhr., 7 {1901), Nn. 10, pp. 433-470). 



Concerning metabolism when water is withheld, A. Spiegler {Ztschr. Biol., 41 

 {1901), No. »', pp. 239-270). — Experiments are reported and discussed. 



The resorption of fat is due to the fact that it is rendered soluble in water, 

 E. PFLtJGER {Arclx. Phi/siol. [Pfliiger], S6 {1901), No. 1-2, pp. 1-46). — Exiieriments 

 are reported and discussed. 



Further investigations on the resorption of fat in w^ater soluble form, E. 

 PFLtJGEK {Arch. IVtysiol. ll'tli(gev], SS {1901), No. 6-8, pp. 299-33S).--A large num- 

 ber of experiments are reported. 



Concerning the value of soaps in the resorption of fat, E. Pfluger {Arch. 

 Phi/siol. [Pfluger'], 88 {1901), No. 9-10, pp. -#^i-^J^).— Experiments which are reported 

 in detail and an extended review of the subject led the author to the conclusion that 

 fatty acids are absorbed in a form in which they are loosely bound together; that 

 is, in a lalnle condition. This is regarded as midway between a dissociated condi- 

 tion and a condition of stability. The resorption of fat, however, necessitates a 

 cleavage into fatty acids and glycerin. 



Resorption in the intestine — III, R. Hober {Arch. Physiol. [Pfliiger], 86 {1901), 

 No. 3-4, pp. 199-214). — A study of resorption by the epithelial cells of the intestine. 



Concerning quantitative resorption in the large and small intestine, F. 

 Reach {Arch. Physiol. IPfliiger], 86 {1901), No. 5-6, pp. 247-258).— Yrom experi- 

 ments w'ith gelatin and alV)uminose solutions, with and without salt, the conclusion 

 is drawn that resorption is much greater in the small intestine than in the large 

 intestine. 



On the resorption of artificially colored fat, L. Hofbauer {Arch. Physiol. 

 [Pfli'igcr], 84 {1901), No. 11-12, pp. 619-627).— The additional experiments reported 

 confirm the author in his opinion that minute particles of fat pass the intestinal wall 

 without saponification. (E. 8. R., 12, p. 981.) 



Experiments on resorption, digestion, and metabolism in Echinoderma, 

 O. CoHNnEi.M {Ztschr. Physiol. Chem., 33 {1901), No. 1-2, 2)p. 9-54) .—Rt'i^ort of large 

 number of investigations. 



The chemistry of peptic and tryptie digestion of proteids — I, D. Lawrow 

 {Zl.'ichr. Physiol. C hern., 33 {1901) , No. 3-4, pp- 312-328). — From experiments which 

 are reported in detail, the conclusion is draw^n that when pig stomach is allowed to 

 digest itself, decomposition being liindered, the long-continued action of pepsin 

 induces as deep-seated cleavage of i)rotein as trypsin. 



Investigations on the occurrence of proteolytic enzyms in the animal 

 body, S. G. Hedin and S. Rowland {Ztschr. Physiol. Chem., 32 {1901), No. 6, pp. 

 531-540). — Numerous experiments were made to show the presence of enzyms in the 

 organs and ti.ssues of cattle, calves, horses, and dogs and to study their nature when 

 present. The principal deductions are summarized as follows: The spleen, lym- 



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