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. Jan- 

 uary, 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 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 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 



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 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. 



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