»19] ANIMAL PRODUCTION. 367 



analyses completed in the laboratory of the imperial agricultural chemist. 

 Entries arc made under the botanical name of the plant from which the products 

 analyzed were derived. In most cases the percentage of albuminoid nitrogen 

 is given in addition to the total nitrogen, and the percentage of sand and silica 

 separated from the soluble mineral matter. The nutritive ratio and the fond 

 units for each item have heen computed. 



Studies of inheritance and evolution in Orthoptera, II, III, It. K. NABOOBS 

 (Jour. Oent tics, 7 (1917), No. 1, pp. 1-54, P?»- 8; abs. in Anat. Rec., 11 (1917), 

 No. 6, pp. 500, 501). — These papers report the continuation of breed in-j experi- 

 ments with grasshoppers of the genus Paratettix, previously noted (E. S. R., 

 31, p. 58). 



The experiments deal with a variety of color markings on the pronota and 

 in the femora of the jumping legs. Fourteen patterns are considered to form 

 B group of multiple allelomorphs, and are held to be typical of one class of 

 characters " allelomorphic to each other, never to an absence." Another char- 

 acter producing a melanlc pattern is recognized and considered typical of a 

 second class of characters "allelomorphic only to their absences, never to each 

 other or any other characters." The possibility that a multiple allelomorph 

 might be the result of linkage of two or more factors is considered in Part III. 



Studies of inheritance and evolution in Orthoptera. — IV, Multiple allelo- 

 morphism and inheritance of color patterns in Tettigidea, A. W. Bellamy 

 (Jour. OenetiCS, 7 (1917), No. 1, pp. 55-70, pi. 1). — Breeding results with over 

 3,000 grasshoppers of the genus Tettigidea are given an interpretation similar 

 to the one adopted by Nabours. 



Inheritance studies of color and horn characteristics, J. \V. Gowen (Maine 

 Sta. Bui. 272 (1918), pp. 127-1^8, figs. 4).— This is an abstract of the paper 

 previously noted (E. S. R., 40, p. 73). 



Ovarian transplantation in Rouen and Peking ducks, R. Kaltenbach 

 (Ztschr. Induktive Abstain, u. Vererbungslehre, 17 (1917). No. 3, pp. 251-253, 

 fit/. 1). — The author reports an unsuccessful attempt at ovarian transplanta- 

 tion in birds, which like attempts of other investigators (E. S. R., 25, p. 867), 

 resulted in absorption of the engrafted ovaries. A new technique prevented 

 the regeneration of the original ovary found in much previous work. The 

 method involves the destruction of the ovary in situ by the cautious application 

 of formalin. Ducks sprayed in this way with or without implantation of a new- 

 ovary developed drake feathering at the next molt. 



Baby beef production, W. H. Pew and J. M. Ewakd (Ioica Sta. Bui. 181 

 (1918), pp. 289-311, figs. 4). — A certain number of corn belt farmers, in spite 

 of the high price of land, labor, and feed, have found it profitable to raise cattle 

 for the purpose of producing baby beef. The results from November, 1913, to 

 November, 1916, are reported of a cooperative study by the station of one of 

 these farms with respect to the methods, costs, and profits of this part of the 

 business. 



The breeding herd, 75 to 90 head, culled out each year, consisted of home- 

 mown cows and heifers, all Hereford grades of good type. The bulls were 

 mostly from the pure-bred herd maintained on this farm. The females were 

 bred to calve not later than May each spring, the hulls. 3 to 5 in number, usually 

 being kept with the whole herd from the end of June to the beginning of Sep- 

 tember. Calves ran with their dams until late November. After weaning they 

 were dehorned and the bulls castrated. Those intended for baby beef then 

 started their feeding. 



Heifer calves designed for the breeding herd were carried through their first 

 winter in the dry lot with the baby beeves and liberally fed. Usually they were 

 bred to calve as 2-year-olds, but if poorly developed the breeding was postponed 



