NATIONAL ACADEMY OF SCIENCES

National Academy of Sciences.

Science, new ser., vol. 32, p. 224.Un medallion de Jacques Cartier. Revue Canadienne, new ser., vol. 5, pp. 6-15, ill.Age of the Gaspe sandstone. (Discussion.) Bull. Geol. Soc.America, vol. 20, pp. 696-697.New York State Museum. Its organization and scope. N. Y.State Education Dept, Circular.Sixth report of the Director of the Science Division, including the 63d report o...

Proceedings of the National Academy of Sciences

Proceedings of the NATIONAL ACADEMY OF SCIENCES

Introduction.-It has been shown earlierl 2 that the synthesis of the isoprenoid, rubber, by a rubber-bearing plant, guayule (Parthenium argentatum), involves acetate as an, intermediate. Not only does the administration of acetate to this plant result in a net increase in the amount of rubber formed, but, in addition, rubber synthesized by plants supplied with doubly C"4-labeled acetate possess...

Proceedings of the NATIONAL ACADEMY OF SCIENCES

and Summary.-Analysis of the electron spin resonance (ESR) of a 'y-irradiated single crystal of L-tyrosine-HCl reveals a free radical formed by loss of an H from the hydroxyl group attached to the ring. Principal g values of the radical are g. = 2.0023 A 0.0005, g, = 2.0067 + 0.0005, and g, = 2.0045 ± 0.0005, with gx perpendicular to the plane of the ring and g, along the CO bond to the ring. A...

The National Academy of Sciences at 150.

of the United States and began to compile data annually to provide the record of all sorts of domains of American life. Data on population, finance, commerce, agriculture, exports, mining, railroads, telegraphs, immigration, education, and public lands were all published and developed into time series collections thereafter. The leaders of the Federal Statistical System became major leaders in ...