DAIRY FARMING DAIRYING AGROTECHNY. 475 



The milk j,'laii(ls of a jjoat wore nourished on one side with the hlood of a 

 lac'tatiiii: goat and on the other side by that of a virgin goat. No difference 

 was found in the amount or comiiosition of the milli of the 2 glands. No 

 definite results were obtained as to the inhibitory effect on milk secretion of 

 lactatlng rabbits by Injecting extracts of a bovine fetus. The milk glands of 

 guinea pigs were transplanted but no delinite information was obtained. 



The author concludes that the embryos of different species can stimulate 

 the growth of milk glands, and therefore that tlie dissected hormones are not 

 specijic and that the milk glands reacli their greatest development through 

 embryonal hormones. There is no specific substance in the blood of a lactating 

 female that stimulates the Ivatabollc pliase of milk secretion. The blood leads 

 to the glands only the material. 



On the orig-in of the lactose of milk, C. Foa {Arch. Fisiol., 5 (1908), No. 6, 

 pp. o.i.3-.'>.')6 ; (i]).s. ill Zrnthh I'InjsloJ., 22 (WOS), No. 2-'/, i)p. 7,SV/. 78.5). — The milk 

 glands q^ 2 goats were removed but the results obtained were different from 

 those of Bert and Porcher (E. S. R., 18, p. 671). No reduction took place in 

 the urine, nor did hyperglycohaemia occur. 



In a study of carbohydrates in the blood of rabbits and bitches the author 

 found the same amount of glucose, glycogen, and invertible glycoproteids in the 

 blood of normal and lactating females. Neither galactose nor lactose was 

 present in the blood. In the blood which had flowed through the milk glands 

 of lactating females there was less free and combined glucose than in the 

 normal blood, while the amount of glycogen was about the same. 



From these experiments and those of the article noted above, the author 

 concludes that an invertible carbohydrate other than lactose and glycogen is 

 present and also a carbohydrate which is united with a proteid but can be 

 isolated with dilute acids. 



The stereochemistry of lactic-acid fermentation, R. O. Heezog and F. Horth 

 {Ztschr. Physiol. Chcm., 60 (1909), No. 2, pp. iJi-75i ).— Nine species of lactic- 

 acid bacteria were grown in media containing different sugars. The results 

 indicate that the form of lactic acid produced depends not on the configuration 

 of the sugar from which it was formed but on the nature of the ferment causing 

 the reaction. 



On the diastases of milk, F. Boedas and F. Touplain (Compt. Rend. Acad. 

 Sci. [Paris], IJ/S (1909), No. 16, pp. 1057-1059; abs. in Jour. Sov. Chem. Indus., 

 28 (1909), No. 10, pp. 538, 539; Rev. G6n. Lait, 7 (1909), No. 1.',, p. 333).— It is 

 stated that ciilcinm caseinate can decom))Ose hydrogen peroxid, and that if this 

 action does not occur in boiled milk It is because the soluble casein of Duclaux 

 is precipitated on the casein in susiiension forming a coat which prevents the 

 decomposition of the hydrogen peroxid. Therefore, it is not necessary to assume 

 the existence of catalases and peroxydases in milk in order to account for the 

 decomposition of the peroxid. 



Contributions to the composition of buffalo milk, F. Baintner and K. Iek 

 (Biochvm. Ztschr.. 18 (1909), No. 1-2, pp. i/, 3-/ ///).— Data are reported of a 

 large number of analyses of the colostrum of buffalo milk, which does not differ 

 essentially from that of the cow. 



The milk of marsupiala, V. Ducceschi (Arch. Fisiol., 5 (1908), No. 5, pp. 

 Jil3-.'i2'i. fifjs. G; abs. in Zciitbl. Physiol., 22 (1908), No. 2J,, p. 7cS//).— The milk 

 of Didclphys marsupialis var. Azarw has characteristics similar to that of 

 higher maumials, but one noticeable difference is the high percentage of fat. 

 It also contains a compound of pliosphorus and protein which gives some of the 

 reactions of casein but is not coagulable by chymosin. Pei)sin but not chymosln 

 was found in the stomach, a fact which does not lend support to the theory 

 that they are identical. 



