268 EXPERIMENT STATION RECORD. [Vol.36 



body from cattle. Such a seasonal variation would be expected to be most 

 pronounced between glands obtained at the height of the outdoor season and 

 those secured at the coldest period of the year, and for this reason two sum- 

 mer and two winter mouths were chosen for collection. In order to determine 

 the difference, if any, in physiological activity between glands from various 

 species of animals, pituitary bodies from hogs were also collected during the 

 summer months. 



It was found that the posterior lobe of the pituitary body of the hog was 

 twice as large, in proportion to the weight of the entire gland, as that in 

 cattle. The physiological activity of the posterior lobe, when determined 

 according to the isolated uterus method, was practically the same for cattle 

 (herbivora) as for hogs (omnivora). No distinct seasonal variation in activ- 

 ity and chemical composition of the posterior lobe of the pituitary body was 

 found in cattle. Approximately 10 per cent of the beef glands contained 

 colloid masses secreted between the anterior and posterior lobes. This mate- 

 rial was insoluble in acidulated water, and did not possess any pronounced 

 uterine-contracting power. 



The material for the second study was selected from a large number of 

 noncastrated calves from two to four months old as well as from full-grown 

 steers. It was found that the pituitary bodies from young animals were 

 slightly more active than the glands from full-grown cattle. This is in 

 accordance with conditions found in other ductless glands, such as the thyroid, 

 thymus, and suprarenals. The infant gland contained more phosphates, both 

 in the anterior and posterior lobes, than glands from fully mature animals. 

 The uterine-contracting active principle of the posterior lobe of the pituitary 

 body was readily extracted from the fresh glands by water and also by neutral 

 acidulated methyl or ethyl alcohol. The acidulated methyl-alcohol extract was 

 more than twice as strong as the water extract, and somewhat stronger than pure 

 crystalline /3-imidazolylethylamin hydrochlorid. 



Com.niercial feeding stufEs, W. J. Jones, Jk., F. D. Fuller, E. G. Pboulx, 

 C. CuTLEK, and J. H. Roop (Indiana Sta. Bui. 190 (1916), pp. 23-360, fig. 1).— 

 This bulletin gives the objects and provisions of the state feeding-stufEs law, 

 terms adopted by the Association of Feed Control Officials, and other data 

 relating to feeding-stuffs inspection. 



Analyses are tabulated of alfalfa meal, blood meal, brewers' dried grains, 

 distillers' dried grains, dried chicken blood, coconut meal, corn bran, corn feed 

 meal, corn-germ meal, gluten feed, gluten meal, cottonseed meal, cottonseed 

 feed, cold-pressed cotton seed, cottonseed hulls, dried beet pulp, fish scrap, 

 ground bone, hominy feed, linseed meal, malt sprouts, meat meal, meat scrap, 

 oat middlings, buckwheat hulls, buckwheat middlings, low-grade flour, red 

 dog flour, rye middlings, tankage, wheat bran, wheat middlings, and mixed, 

 proprietary, and condimental feeds. 



Concentrated commercial feeding stuffs, J. D. Turner and H, D. Spears 

 (Kentucky Sta. Bui. 203 (1916), pp. 251-333).— In addition to the usual notes 

 on the enforcement of the state feeding-stuffs law, this bulletin gives grades 

 for commercial corn and results of analyses of alfalfa meal, granulated bone, 

 meat scrap, tankage, dried beet pulp, cracked corn, corn-feed meal, hominy 

 feed, cotton-seed meal, linseed meal, rye feed, wheat bran, wheat middlings 

 and shorts, brewers' dried grains, distillers' dried grains, and mixed and pro- 

 prietary feeds. 



The following table gives the amino-acid content of various protein sub- 

 stances, as determined by E. H. NoUau: 



