original investigations that were recognized in all countries as outstanding contributions. Altogether, his scientific papers number ninety-two, of which some are in collaboration with colleagues. The major investigations have led to the opening of new and varied fields of inquiry, and in following these openings many students have been trained in research under his guidance. Now they are spread over the country in industrial research laboratories and in institutions of higher learning. National recognition has come to him in the awards of the Nichols, Willard Gibbs, and Chandler medals, the national presidency of the American Chemical Society, and membership in the National Academy and in numerous other scientific societies, both at home and abroad. In building up a staff of associates he has shown a rare good judgment in selecting an articulated group whose members share the teaching and supplement one another in research. Already the four associates now on the staff have contributed almost one hundred original papers. Professor Emeritus Gomberg has assurance that the work begun under him will progress much further.
In a History of the Chemical Laboratory (1916), Campbell estimated that a total of 746 articles had been published by members of the teaching staff while they were connected with the chemical laboratory. These included papers in medical chemistry, in pharmacy, in chemical engineering, and in pure chemistry. Original contributions to the science of chemistry amounted to 401. From 1916 to 1940 the staff in pure chemistry has added 432 original contributions. Included in the list are a number of epochmaking papers.
