„
HAPPY
BIRTHDAY I.M.KOLTHOFF fourth edition has been translated into Italian, Japanese, and Spanish. Scientific Progeny In the long run perhaps the most important contribution to science of someone like Kolthoff is the lasting and growing influence on several gen erations of students. It is no easy task to trace this lineage, because consider ation must be given not only to the di rect line from professor to PhD stu dent but to several less direct types of influence as well. In the direct line, one can trace numerous examples of four scientific generations, e.g., Lingane-Bard-Faulkner-students; or Hume-Purdy-Christian-students; or Laitinen-Enke-Nieman-students; and a few examples of five genera tions. Through 1982, Kolthoff has pro duced close to 1100 PhD "offspring." However, there are many examples of ex-students teaching in non-PhDgranting institutions who are sending BS and MS chemists on to other schools for further study. A good ex ample is the line Sandell-Ramettestudents. Of course, many BS and MS chemists are also educated in PhDgranting departments, and the lines of scientific influence can become greatly entangled. An example is the Laitinen-Holtzclaw-Collman line. James Collman received his MS degree under Holtzclaw as an inorganic major, but went on to graduate work in the field of organic chemistry and is now a pro fessor in that area at Stanford. Another type of entanglement is en countered with the many postdoctoral students of Kolthoff. It would not be proper to claim many of these as di rect progeny, especially if they came as mature scientists for just a year or two of study and then returned to their permanent positions. However, there are some exceptions, in which the postdoctoral influence proved to be a turning point, such as Joseph Jordan who went on to an academic career in areas initiated during his postdoctoral study. Less direct influences are those ex erted by ex-students on their col leagues and on students of other pro fessors through undergraduate and graduate courses. Such influences are more subtle but no less real than the direct ones. In the same vein are the influences exerted in industrial labo ratories by research managers on younger chemists. A few examples are represented by Vernon Stenger (first
generation) and Warren Crummett (second generation) at Dow, the late Henry Yutzy at Eastman Kodak, and Frank Bovey at Bell Laboratories. Conclusion In this brief account of the scientific accomplishments of Izaak Maurits Kolthoff, we have concentrated on just one aspect of a long and wellrounded life. We have omitted men tion of his efforts on the political scene to foster international under standing, on the social scene to rescue scientific colleagues from oppressive regimes, his interests in cultural events, his athletic interests, his cou rageous battles with various physical setbacks, and his vigorous and stimu lating interaction with students and colleagues. We leave to future histori ans the formidable and rewarding task of recounting these matters. References (1) Lingane, James J. Talanta 1964,11, 67-73. (2) Hildebrand, Joel H. J. Am. Chem. Soc. 1913,35,847.
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