66 EXPERIMENT STATION RECOSD. 



ultimately would end in an extreme impoverishment of tlie skeleton iu lime 

 may be merely the result of other physiological disturbances." 



The effect of a "high mag-nesium intake on calcium retention by swine, 

 E. B. Haet and H. Steenbock {Jour. Biol. Chem., IJ, (WIS), No. 2, pp. 75-80).— 

 A pig given a ration of com, wheat, and bran retained a small amount of lime. 

 Adding magnesium sulphate to this ration increased the urinary elimination 

 of calcium, showing a negative balance of calcium. The addition of both mag- 

 nesium sulphate and dicalcium acid phosphate reduced the urinary elimination 

 of calcium caused by the magnesium sulphate alone, but increased the fecal 

 elimination of calcium. 



" The fact that the relation of phosphorus to calcium and magnesium in our 

 grains is high, with the probable formation in the tract of magnesium phosphate 

 and its excretion by way of the intestine, would help to explain the difference 

 in the action of magnesium chlorid or sulphate jmd the magnesium normal 

 to grains. The interrelations existing between mineral elements are important 

 factors for consideration in studying the specific role of a mineral element in 

 animal nutrition." 



Diet deficiency and disease in live stock, F, E. Pi^ce {Jom\ Dept. Agr. 

 So. Aust., 16 (191S), No. 7, pp. 76Jf-773; Amer. Yet. Rev., J,3 {1913), No. 1, pp. 

 '16-6O). — ^A paper read before the veterinary section of the Australian Associa- 

 tion for the Advancement of Science, in which attention is called to certain 

 diseases caused by a deficiency of certain constituents in feeding stuffs. 



In regard to the normal pulse rate of mammals, A. P. Knoll ( Untersuchun- 

 fjen iiber die normale PuJsfrequenz der Kinder und Schweine ncbst vergleichen- 

 den Physiologisclien kritischcn Studien iiber die normale Pulsfrequenz des 

 Menschen und des Haussdugetiere. Inaug. Diss., Univ. Zurich, 1911, pp. 75; ais. 

 in Ber. K. Tierdrztl. Hochschule Dresden, n. ser., 6 {1911), pp. J/S-JfS; Amer. 

 Jour. Vet. Med., 8 {1913), No. 3, p. 170). — A report of experiments on the in- 

 fluence of age, sex, exercise, weather, underfeeding, and other factors on the 

 pulse rate of cattle, pigs, and sheep. 



The direct transfer of the food and drink of ruminants through swallowing, 

 VoLTz {Abs. in Deut. Med. Wchnschr., 38 {1912), No. 1, p. Ifl). — When a sheep 

 was killed dij*ectly after tU'iuking a large amount of water to which alcohol 

 had been added, nearly all of the alcohol was recovered in the paunch, showing 

 that liquids are not immediately transferred to the abomasum. 



The biochemistry of the female genitalia, T. A. Eepf-Lefkovics and J. 

 RosENBLOOM {Biochcm. Bui., 2 {1913), No. 6, pp. 233-237). — Brief reports are 

 given on a quantitative study of certain enzyms of the ovary, uterus, and 

 bladder of pregnant and nonpregnant sheep, and on the absence of certain 

 enzyms from the human chorion. 



Influence of the spermatozoids on the blastula, II, J. H. F. Kohlbrugge 

 {Arch. Mikros. Anat., 77 {1911), No. 1, I, pp. 82-85, figs. 2).— The sperma- 

 tozoids were found to pass through the zona pellucida of the blastula in bats 

 and rabbits. In some cases they may even penetrate the blastula, but no definite 

 data were obtained as to any permanent effect on the embiyo. 



The scientific and practical significance of artificial impregnation in 

 mammals, E. Iwanoff {Verhandl. Intemat. Zool. Kong. Oraz, 8 {1910), pp. 

 623-631). — This contains brief notes on work done by the author and other in- 

 vestigators. The possibilities of overcoming sterility in the female and success 

 in crossing species difficult to breed, together with other practical problems of 

 heredity such as methods of keeping spermatozoa for transportation to con- 

 siderable distances, are discussed. 



Nucleus and cytoplasm in inheritance, A. Scheeiner {Biol. CentU.,32 {1912), 

 No. 4, pp. 230-233; abs. in Jour. Roy. Micros. Soc. [London], 1913, No. 1, pp. 



