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Show TECHNICAL PAPEBS. Technical paper 35 Weathering of the Pittsburg coal bed at the experimental experi-mental mine near Bruceton, Pa., by H. C. Porter and A. C. Fieldner, 1914, 85 pp., 14 figs. Technical paper 62 Kelative effects of carbon monoxide on small animals, by G. A. Burrell. F. M. Seibert and L W. Bobertson, 1914, 23 pp. Technical patfer 72 Problems of the petroleum industry; results of conferences confer-ences at Pittsburg, Pa;, August 1 and September 10, 1913, by I. C. Allen, 1914, 20 pp. Technical paper 74 Physical and chemical properties of the petroleums of California, bv I. C. Allen, W. A. Jacobs, A. S. Crossfield and B. B. Matthews, 1914, 38 pp., 1 fig. - Only a limited supply of these publications pub-lications is available for free distribu-t, tion, and applicants are asked to cooperate co-operate in insuring an equitable distribution distri-bution by selecting publications that are of especial interest. Bequests for all papers cannot be granted without satisfactory sat-isfactory reason. Publications should be ordored by number and title. Applications Ap-plications should be addressed to the director of the bureau of mines, Washington, Wash-ington, D. C. |