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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Allen Press and Society for Range Management are collaborating with JSTOR to digitize, preserve and extend access to Journal of Range Management. BLUEBUNCH wheatgrass (Agropyron spicatum) and arrowleaf balsamroot (Balsamorhiza sagittata) are widely distributed throughout the West, being especially abundant on many sagebrushgrass ranges which are commonly grazed in spring and fall. On such ranges in good condition on the upper Snake River Plains, herbage production of these two species may be approximately half of the grass and forb total (Mueggler, 1950). Since both are palatable to livestock, they furnish a high proportion of the diet of grazing animals. Knowledge of chemical composition of these species, then, should be useful in evaluating the quality and quantity of nutrients and in the development of sound management practices. Although chemical analysis does not directly measure nutritive value, the close relation between digestibility and chemical composition (Forbes and Garrigus, 1947; Morrison, 1937; Sotola, 1940) indicates that composition is a good index of nutritive value. This paper describes seasonal variations of wheatgrass and balsamroot over a 4-year period and includes similar information on some associated species: Sandberg bluegrass (Poa secunda), hawksbeard (Crepis acuminata), threetip sagebrush (Artemisia tripartita), and bitterbrush (Purshia tridentata). These additional species were selected because of their abundance and their wide range in phenological development.

The triglyceride and phosphatide contents of seven varieties or types of dry beans and the Alaska pea were determined. The triglyceride content ranged from 0.89% for Alaska peas to 1.54% for Michelite beans. The phosphatide content averaged near 1 %, except for lima beans which averaged 0.88%. Gas-liquid chromatography was used to study the component fatty acids of the triglycerides and phosphatides. The main fatty acids of the triglycerides were palmitic, oleic, linoleic, and linolenic. Small amounts of myristic acid were found in all varieties except Great Northern beans. Lauric acid was found in Alaska peas. The list of component fatty acids of the phosphatides was similar to the triglycerides, except for the omission of linolenic acid in the phosphatides of the Great Northern, Michelite, Pinto, and lima beans. Palmitic acid constituted about 50% of the fatty acids in the phosphatides of the eight types of beans and peas studied. No significant simple correlation coefficients were obtained between triglyceride, phosphatide, or crude lipid content and the cooking time for the dry beans.