254 EXPERIMENT STATION RECORD. 



The live weights given in the table refer to the weight at the ship- 

 ping point. All the animals included in the experiment gained in 

 live weight during the feeding period, and examination showed that 

 the quality of the pork did not suffer. 



The reason for exportation of as heavy hogs as those included in the 

 experiment lies in the present Gernian tariff, which imposes a custom 

 duty of 5 marks per head for live hogs, while the tariff on slaughtered 

 hogs is 17 marks per 220 lbs. — F. w. avoll. 



Areca and betfel, E. Martin {Eev. Scient., ser. 4, 6 (1806), No. 4, pp. 112-117).— A. 

 description of areca and betel, with their properties and uses. 



Proximate composition of the gluten cf cereals, E. Flkurent {Compt. Bend., 

 123 {1896), No. 5, pp. 327-330). 



Chemical study of lo-wr-grade flour used in baking, Balland {Compt. Rend., 123 

 {189G), No. 5, pp. 325-327). 



The food required by children of various ages, W. C'ameker {Ztschr. Biol., 35 

 {1896^, No. 3, pp. 320-332). — A criticism of work on this subject by Sonden and 

 Tigerstedt. 



On the lowest limit of nitrogen equilibrium, E. YoiT {Ztschr. Biol., 33 {1896), No. 

 3j pp. 333-351). — A reply to Munk's criticism on this subject. 



Digestive proteolysis, R. H. Chittenden {Nciv Haren: Little, Morehouse </• Co., 

 1895, pp. 137). — The book consists of the Cartwright lectures for 1894, printed origi- 

 nally in the Medical Record. The subjects treated of are as follows: The general 

 nature of jirotelytic enzymes and of proteids, proteolysis by pepsin hydrochloric acid, 

 with a consideration of the general nature of proteoses and peptones, jiroteolysis of 

 trypsin, and absorption of the main i>roduct8 of proteolysis. 



An extension of the application of the law of equivalence of energy in biol- 

 ogy, A. Chauveau {Compt. Ilend., 123 {1896), No. 5, pp. 283-289). 



The normal occurrence of iodin in the animal body, I, E. Baumann {Ztschr. 

 physiol. Chem., 21 {1896), No. 4, pp. 319-330). 



The normal occurrence of iodin in the animal body, II, E. Baumann and E. 

 Ross {Ztschr. phiisiol. Chem., 21 {1890), No. 5-0, pp. 481-493). 



The normal occurrence of iodin in the animal body: III. The iodin content of 

 the thyroid gland of man and animals, E. Baumann {Ztschr. physiol. Chem., 22 

 {1896), No. l,i}p. 1-18). 



Fattening or turning loose in the pasture, H. Bartii {Dent, landw. Presse, 23 

 '1896), No. 76, p. 681). — The advantages and disadvantages of both procedures are 

 discussed. 



DAIRY FARMING— DAIRYING. 



The effect of heavy exercise on milk production, T. Henkel 



{Landw. Vers, Stat., 40 {1S95), irp. 329-355). — The literature of this 

 subject is reviewed at length, and is summed up by the author as 

 follows : 



"The authors agree that moderate exercise has a favorable influence 

 on the quantity aud quality of milk, while heavy fatiguing exercise or 

 work diminishes both the quantity and the quality of the milk. But as 

 to the effect of heavy exercise on the quality of milk the results are not 

 clear or uniform." 



Seven separate experiments are reported in which cows — usually a 



