Number 15. A list of seismologic stations of the world. Compiled by Harry O. Wood. July, 1921. Pages 142. Price $2.00. Volume 3 Number 16. Research laboratories in industrial establishments of the United States, including consulting research laboratories. Originally compiled by Alfred D. Flinn; revised and enlarged by Ruth Cobb. December, 1921. Pages 135. Price $2.00. Number 17. Scientific papers presented before the American Geophysical Union at Number 19. Celestial mechanics. Volume 4 Report of the Committee on Celestial Mechanics of the National Research Council. H. N. Russell. September, 1922. Number 20. Secondary radiations produced by X-rays, and some of their applications to physical problems. Arthur H. Compton. October, 1922. Pages 56. Price $1.00. Number 21. Highway research in the United States. Results of census by Advisory Board on Highway Research, Division of Engineering, National Research Council, in cooperation with the Bureau of Public Roads, United States Department of Agriculture. William Kendrick Hatt. October, 1922. Pages 102. Price $1.50. Number 22. Mechanical aids for the classification of American investigators, with illustrations in the field of psychology. Harold C. Bingham. November, 1922. Pages 50. Price $0.75. Number 23. Certain problems in acoustics. Compiled by the National Research Council Committee on Acoustics. November, 1922. Pages 31. Price $0.50. Number 24. Electrodynamics of moving media. Report of the National Research Council Committee on Electrodynamics of Moving Media. W. F. G. Swann, John T. Tate, H. Bateman, E. H. Kennard. [In press.] Number 25. Celestial mechanics. A survey of the status of the determination of the general perturbations of the minor planets. Appendix to the report of the Committee on Celestial Mechanics. A. O. Leuschner. [In press.] Volume 5 Number 26. Cooperation with the Federal government in scientific work. E. W. Allen. December, 1922. Pages 27. Price $0.50. Number 27. The present status of visual science. Leonard Thompson Troland. December, 1922. Pages 120. Price $1.50. Orders, accompanied by remittance, should be addressed to PUBLICATIONS OFFICE, NATIONAL RESEARCH COUNCIL, Washington, D. C. Research Council Number 1. Report of the Patent Committee of the National Research Council. Presented for the Committee by L. H. Baekeland, Acting Chairman. February, 1919. Pages 24. Price $0.30. Number 2. Report of the Psychology Committee of the National Research Council. Refractory materials as a field for research. By Edward W. Washburn. January, 1919. Pages 24. Price $0.30. Number 4. Industrial research. By Frank B. Jewett. 1918. Pages 16. Price $0.25. Number 5. Some problems of sidereal astronomy. By Henry Norris Russell. October, 1919. Pages 26. Price $0.30. Number 6. The developments of research in the United States. By James Rowland Pages 15. Price $0.20. 16. Price $0.25. Number 9. A reading list on scientific and industrial research and the service of the chemist to industry. By Clarence Jay West. April, 1920. Pages 45. Price $0.50. Number 10. Report on the organization of the International Astronomical Union. Presented for the American Section, International Astronomical Union, by W. W. Campbell, Chairman, and Joel Stebbins, Secretary. June, 1920. Pages 48 Price $0.50. Number 11. A survey of research problems in geophysics. Prepared by Chairmen of Sections of the American Geophysical Union. October, 1920. Pages 57. Price $0.60. Number 12. Doctorates conferred in the sciences in 1920 by American universities. Compiled by Callie Hull. November, 1920. Pages 9. Price $0.20. [Out of print.] Number 13. Research problems in colloid chemistry. By Wilder D. Bancroft. January-April, 1921. Pages 54. Price $0.50. [Out of print.] Number 14. The relation of pure science to industrial research. By John J. Carty. October, 1916. Pages 16. Price $0.20. Number 15. Researches on modern brisant nitro explosives. By C. F. van Duin and B. C. Roeters van Lennep. Translated by Charles E. Munroe. February, 1920. Pages 35. Price $0.50. Number 16. The reserves of the Chemical Warfare Service. By Charles H. Herty. February, 1921. Pages 17. Price $0.25. Number 17. Geology and geography in the United States. By Edward B. Mathews and Homer P. Little. April, 1921. Pages 22. Price $0.20. [Out of print.] Number 18. Industrial benefits of research. By Charles L. Reese and A. J. Wadhams. February, 1921. Pages 14. Price $0.25. Number 19. The university and research. By Vernon Kellogg. June, 1921. Pages 10. Price $0.15. Number 20. Libraries in the District of Columbia. Compiled by W. I. Swanton in co-operation with the Research Information Service of the National Research Council and Special Libraries. June, 1921. Pages 19. Price $0.25. Number 21. Scientific abstracting By Gordon S. Fulcher. September, 1921. Pages 15. Price $0.20. Number 22. The National Research Council. Its services for mining and metallurgy. By Alfred D. Flinn. October, 1921. Pages 7. Price $0.20. Number 23. American research chemicals. By Clarence J. West. September, 1921. Pages 28. Price $0.50. Number 24. Organomagnesium compounds in synthetic chemistry: a bibliography of the Grignard reaction 1900-1921. By Clarence J. West and Henry Gilman. January, 1922. Pages 103. Price $1.50. Number 25. A partial list of the publications of the National Research Council to January 1, 1922. February, 1922. Pages 15. Price $0.25. Number 26. Doctorates conferred in the sciences by American universities in 1921. Compiled by Callie Hull and Clarence J. West. March, 1922. Pages 20. Price $0.20. Number 27. List of manuscript bibliographies in geology and geography. Compiled by Homer P. Little. February, 1922. Pages 17. Price $0.25. Number 28. Investment in chemical education in the United States, 1920-1921. By Clarence J. West and Callie Hull. March, 1922. Pages 3. Price $0.15. Number 29. Distribution of graduate fellowships and scholarships between the arts and sciences. Compiled by Callie Hull and Clarence J. West. April, 1922. Pages 5. Price $0.15. Number 30. The first report of the committee on contact catalysis. By Wilder D. Bancroft, chairman. In collaboration with the other members of the committee. April-July, 1922. Pages 43. Price $0.50. Number 31. The status of "clinical" psychology. By F. L. Wells. January, 1922. Pages 12. Price $0.20. Number 32. Moments and stresses in slabs. By H. M. Westergaard and W. A. Slater. April, 1922. Pages 124. Price $1.00. Number 33. Informational needs in science and technology. By Charles L. Reese. May, 1922. Pages 10. Price $0.20. Number 34. Indexing of scientific articles. By Gordon S. Fulcher. August, 1922. Pages 16. Price $0.20. Number 35. American research chemicals. First revision. By Clarence J. West. May, 1922. Pages 37. Price $0.50. Number 36. List of manuscript bibliographies in chemistry and chemical technology. By Clarence J. West and Callie Hull. December, 1922. Pages 17. Price $0.25. Number 37. Recent geographical work in Europe. By W. L. G. Joerg. July, 1922. Number 38. The abstracting and indexing of biological literature. J. R. Schramm. Number 39. A national focus of science and research. George Ellery Hale. Novem- PUBLICATIONS OFFICE, NATIONAL RESEARCH COUNCIL, |