382 EXPERIMENT STATION RECORD. 



fat in a numher of samples of cotton-seed meal, linseed meal, gluten meal, gluten 

 feed, oat feed, meal meal, meat scrap, and mixed feeds. The law is regarded as 

 successful, and statements are made, concerning its operation. 



Report of the dairy and food commissioner, L. Wells (Pennsylvania Dept. Ayr. 

 Bui. 34, pp. 108-118). — A report is given showing the satisfactory working of the 

 pun-food law in Pennsylvania. The subject is discussed chiefly from a legal 

 standpoint. 



Data on the growth of young stock, ('. ('. GEORGESON, F. C. Burtis, and D. H. 

 Otis ( Kansas Sta. />'»/. 7 .', pp. 175-180). — Notes are given on the growth of the young 

 cattle in the station herd during the winter of 1897, The amounts of food consumed 

 and gains made by 12 Shorthorns, 4 I-Iolstein-Friesiaus, 3 Herefords, and 5 Jerseys 

 are recorded. No conclusions are drawn from the work. 



DAIRY FARMING— DAIRYING. 



Investigations on the composition of colostrum with special 

 reference to the proteids, II. Tiemann (Ztschr. Physiol. Ghent., 25 

 (1898), No. 5-6, pp. 363-392). — Analyses are tabulated of the colostrum 

 from the first 3 milkings of 2 Angler, 1 Breitenburger, 1 Shorthorn- 

 Dithmarsch, and 2 native cows. Tbe methods employed are described, 

 and, incidentally, a comparison is given of the Wollney refractometer 

 with gravimetric analysis for fat. 



The results show that the colostrum of different cows varies widely 

 in composition. The solids ranged from 12.83 to 32.93 per cent, 

 decreasing from one milking to another, while the water increased. 

 The greatest variation was found in the fat, which ranged from 0.5G to 

 9.28 per cent. The total proteids varied from 13.25 to 21.76 per cent for 

 the first milking, from 7.74 to 15.80 for the second, and from 4.66 to 12.06 

 for the third, thus decreasing rapidly from milking to milking. The 

 sugar content, on the other hand, increased, varying from 1.63 to 2.92 

 in the first milking, from 2.37 to 3.88 in the second, and from 2.74 to 

 4.39 in the third. The ash showed little change from one milking 

 to another. Comparing the results with those given by others, the 

 author concludes that breed has little to do with the composition of 

 colostrum, but that it is a matter of individuality. 



Most of the paper is devoted to the proteids of colostrum. The 

 literature of the subject is reviewed, showing the prevalence of a diver- 

 sity of views on the nature of the proteids, some investigators asserting 

 the absence of casein and that only al bumen is present, while others claim 

 that both casein and albumen are present, although they differ consid- 

 erably as to the relative amounts of the two. Sebelin 1 and E miner- 

 ling 2 have also reported the presence of a globulin in colostrum. 



The author's investigations were made on colostrum from the first 

 3 milkings of the cows mentioned above. Separations were made 

 by means of the porous plate and by various chemical means. He 

 concludes that the content of total proteids differs widely and dimin- 



1 Ztschr. Physiol. Chem., 13 (1889), p. 171. 

 2 Centbl. Agr. Chem., 17 (1888), p. 861. 



