ANIMAL PRODUCTION. 865 



suprarenals show no marked effect. In the males a tendency toward enlarge- 

 ment follows castration, which does not appear after spaying females. No 

 conclusions were reached as to the effect of castration or spaying on the thymus 

 or pineal gland." 



A bibliography of references is given. 



Studies on the carotin group of the animal body. — I, Insecta, P. Schttlze 

 (Sitzber. Ge.tcU. Nnturf. Freiimle Berlin, No. 1 (1913), pp. 1-22, pis. 3, figs. 3.— 

 This reports a study of the chemical and physical nature and the physiological 

 significance of the carotinoids in insects. 



Studies of the carotin-xanthophyll group. — II, The carotin structure of 

 the Chrysomelidae, P. Schulze (Sitzher. Gesell. Naturf. Freiinde Berlin, No. 

 8-9 {191.'i), pp. 398-406, pis. 2). — This is a continuation of the above and treats 

 of the physiological characteristics of the carotin-xanthophyll group as found 

 in the Chrysomelidse. A bibliography is given. 



The palatability of farm grasses, C. G. Williams (Mo. Bui. Ohio Sta., 1 

 {1916), No. 3, pp. 70-72). — In two experiments to determine the palatability of 

 various farm grasses 4 horses were fed from 18 to 20 lbs. of hay a day, one- 

 half of the hay of each feed being timothy, and the remainder an equal 

 weight of one of the other hays, a different one being tried each succeeding 

 day. The timothy was placed in one end of the manger and the hay to be 

 compared with it in the other end. 



It was found that, in general, the mixed clover and timothy hay was more 

 palatable than timothy or any other one grass. Brome grass stood second 

 and timothy third. While the rye grasses (Italian rye and perennial rye) 

 received high rank in the first test, they did not hold up as well in the second, 

 and it is probable that their proper position is intermediate. Tall oat grass 

 was decidedly inferior as regards palatability, with blue grass and redtop close 

 seconds. 



Kafi.r corn (" dari ") from South Africa (Bui. Imp. Inst. [So. Kensington'}, 

 13 {1915), No. 3, pp. 379, 380; abs. in Analyst, 41 {1916), No. 478, p. S).— Analy- 

 ses are given of various types of South African Kafir corn. 



Comparative experiments with feed roots, 1912-1914, P. Bolin {Meddel. 

 Centralanst. Forsoksv. Jordbruksomrddet, No. Ill {1915), pp. 25, figs. 2; K. 

 Landtbr. Akad. Handl. och Tidskr., 54 {1915), No. 4, pp. 365-388, figs. 2).— 

 Experiments were made with various feed roots during three years for the 

 purpose of ascertaining their contents of dry matter. The roots under experi- 

 mentation were 3 kinds of Bortfelder, 3 Yellow Tankards, and 2 Ostersund 

 turnips ; 3 kinds of Bangholm and 2 kinds of Swedish turnips ; and the Barres 

 and Eckendorfer fodder beets. 



It was found that the various kinds of the same roots are quite similar in 

 the amount of dry matter gathered from 1 hectare, as when one kind yields a 

 greater percentage of dry matter another gives a greater yield of crop. The 

 oblong Bortfelder and the Yellow Tankard turnips were superior to the white 

 Ostersund, and among the beets, the Barres proved superior to the cylindrical 

 Eckendorfer. In comparing the three kinds of roots, the Bortfelder, Yellow 

 Tankard, and Ostersund turnips proved inferior in dry-matter content to the 

 beets and Swedish turnips. The Swedish turnips gave best results in central, 

 the beets in southern Sweden. The former developed better during the wet 

 and cold season of 1912, while the beets gave better results during the dry and 

 warm summer of 1914. 



Value of blood and other offal for feeding purposes {Wiener Landw. Ztg., 

 65 {1915), No. 38, pp. 310, 311, figs. 2; abs. in Internat. Inst. Agr. [Rome}, Mo. 

 Bui. Agr. Intel, and Plant Diseases, 6 {1915), No. 7, pp. 970, 971).— An appa- 



