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 Oilman. Janu- 

 ary, 1922. Pages 103. Price $1.50. 



Number 25. A partial list of the publications of the National Research Council to 

 January i, 1922. February, 1922. Pages 15. Price $0.25. 



Number 26. Doctorates conferred in the sciences by American universities in 1921. 

 Compiled by Gallic 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 Gallic Hull. March, 1922. Pages 3. Price $0.15. 



Number 29. Distribution of graduate fellowships and scholarships between the arts 

 and sciences. Compiled by Gallic 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. [In press.] 



Number 37. Recent geographical work in Europe. By W. L. G. Joerg. July, 1922. 

 Pages 54. Price $0.50. 



Number 38. The abstracting and indexing of biological literature. J. R. Schramm. 

 November, 1922. Pages 14. Price $0.25. 



Number 39. A national focus of science and research. George Ellery Hale. 

 November, 1922. Pages 16. Price $0.25. 



Number 40. The usefulness of analytic abstracts. Gordon S. Fulcher. [In press.] 



Number 41. List of manuscript bibliographies in astronomy, mathematics, and 

 physics. Clarence J. West and Gallic Hull. [In press.] 



Orders, accompanied by remittance, should be addressed to 



PUBLICATIONS DEPARTMENT, 

 NATIONAL RESEARCH COUNCIL 



WASHINGTON, D. C. 



