ible. In general, however, you should only consider two manufacturers. One of them produces better mouthpieces and the other better instruments. Collect all you can from the several Delaware stores, bring them to our house tonight and we will choose the combination which sounds best.'' And this was done. The entire Delaware supply of clarinets was brought to the Pigford home and the choice was made by the child and Robert Pigford playing Mozart duets. The visitors to the Pigford home were a part of the extended Pigford family, and, as such, their needs took precedence over any earlier plans for the evening.

Another story with which to close: a new student had been assigned to share a laboratory with another of Pigford's graduate students—the late Robert H. Perry. The latter individual advised the new student that he was in for a demanding but inspiring experience, for, he said, you will be working with "A prince among men."

How many times have each of us, the numerous authors of this tribute, witnessed Robert Pigford as a productive engineer, as an educator, as a scholar, as a friend, and thought, "Yes—a prince among men." We are privileged to have been among his colleagues.

THIS TRIBUTE HAS BEEN submitted for publication to Industrial and Engineering Chemistry Research, as well as to the National Academy of Sciences' Biographical Memoirs. The generosity of both organizations in permitting this dual publication is appreciated.