ANIMAI, PKODUCTION. 65 



Chemical studies are reported and discussed which had to do with the fermentation 

 and the achilteration of preserves and marmalades, th.'> presence of added coloring 

 matter, preservatives, etc. 



Sustaining power of Demerara sugar ( Itdenidt. Smjar Jonr., -> {1903), No. 52, 

 p. 157). — A brief note quoting 8ir j\hirtin Conway to the effect that he found a quar- 

 ter of a pound (if sugar per man per day of advantage as a food in mountain chmbing. 



Concerning respiratory metabolism during static ■work, A. Bornstein and 

 E. P<>[iEH (.I/t/(. I'lii/sioL ll'jlihjer], 95 {190S), No. S-4, pp- i4e-/J7).— The effects of 

 static work as distinguished from dynamic work were studied with special reference 

 to changes in the respiratory quotient. The work consisted in holding a weight in 

 the right hand, the arm being raised perpendicularly and the subject being in a 

 reclining position. The authors conclude that metabolism is increased by static 

 work, the amount being greater rather than directly proportional to the weight sus- 

 tained, and also greater rather than directly proportional to the duration of the 

 work. 



The article is followed })y a brief note by N. Zuntz. 



The lecithans, their function in the life of the cell, W. Koch ( Univ. Chicago 

 Decen. Pahs., 10 {1902), p. 1; ab.<i. in Jour. Phys. Chem., 7 {1903), No. 3, pp. 230, 

 231). — "Lecithan" is proposed as a name for the group including such compounds 

 as egg lecithin, kephalin, myelin, paramyelin, etc. Data regarding the estimation 

 of such bodies is given and their importance is discussed. 



Contribution to the study of diuresis. VII, Diuresis -when excretion is 

 hindered, W. Filehne and W. Ruschhaupt {Arch. Physiol. [Ptl>'(g^r], 95 {1903), No. 

 9-10, pp. 409-438). — Experimental data reported and discussed. 



Contribution to the subject of diuresis. "VIII, Further experiments on 

 water absorption, W. Filehxe and Bibekfeld {Ardi. I'liysioJ. \_Pjii'i(j('r'\, 95 (1903), 

 No. 9-10, pp. 4^9-44'i)- — Continuing work noted above, experimental data are 

 reported and discussed. 



The tramp's handbook, H. Roberts {London and Neir Yorl-: ,Tohii Lonr, 1903, 

 pp. 175, pJx. 9, fiys. 34). — In this volume the author pays especial attention to meth- 

 ods of camp cookery and gives information regarding the use as food of many sorts 

 of game, fish, and vegetable products found in (ireat Britain, a number of which are 

 not connnonly eaten. 



Progress in the examination of foods and condiments, including fats and 

 oils, during the year 1902, Ttz {Ocstcrr. Chem. Ztg., (! (1903), Nos. c, pp. in-124; 

 7, p]). 143-150; 10, pp. 221-224). — -^ general summary. 



Regulations of the superior board of health of Porto Rico {San Juan: Board 

 of Health, 1903, pp. 34)- — The text of the regulations governing the importation, 

 sale, etc., of foods and drugs is given. 



ANIMAL PRODUCTION. 



Decomposition of feeding stuffs and foods by micro-organisms. IV, 

 Cleavage of vegetable materials by bacteria, J. Koxk;, A. SpieckeRxMann, and 

 A. Olig {Ztschr. IJntersucJi. Nakr. u. Genussmil., {1903), Nos. 5, pp. 193-217; G, pp. 

 241-258; 7, pp. 289-296). — An extended review of the literature of the subject is given 

 and experiments are reported on the decomposition of cotton-seed meal by micro- 

 organisms. The principal conclusions follow: The different sorts of micro-organisms 

 decomposing cotton-seed meal have similar physiological characteristics and are 

 affected by the composition of the meal and also by the air supply. When air is 

 entirely excluded rod-like micro-organisms of the Bacterinin coli type, which form 

 sugar with the evolution of gas, develop freely, as well as the coccus types, which 

 produce sugar without gas evolution. Indifferent varieties are als( ) observed which do 



