ERNEST GUENTHER, THE SCIENTIST 287 understanding and without the continuous encouragement and moral support on the part of Mr. Leonhardt and his associates, the completion of the great work might have been delayed by many years, if not vitiated altogether. In concluding this all too inadequate statement, I cannot help returning to Ernest's humanistic and classical background which is so manifest in his outstanding personality and in his scientific writings, and of which he is so proudly conscious. And this is why I deem it only fitting to suggest that our contemporary, Ernest Guenther, the author of "The Essential Oils," can justly say of his accomplishment at least as much as Horace said of his own work (in the thirtieth ode of the third book): "Exegi monumentum aere perennius regalique situ pyramidum altius, quod non imber edax, non Aquilo impotens possit diruere aut innumerabilis anncrum series et fuga temporum. Non omnis moriar multaque pars mei vitabit Libitinam .... " "I have erected a monument more enduring than bronze, of regal pro- portions and higher than the pyramids, one that no wasting rain, no powerless north wind could destroy, nor the countless number of years and the flight of the ages. I shall not die completely, since a great part of me will remain immortal .... " ERNEST GUENTHER, THE SCIENTIST By EDWAKD E. LANGENAU THE CONTRIBUTIONS of Dr. Ernest Guenther to the field of essential oils and to the related fields of perfumery and cosmetics cannot be over- emphasized. Unfortunately, the scope of this address permits me to touch but briefly upon his training and upon his important contributions to this field. The formal education of Ernest Guenther included study at the Tech- nische Hochschule of Munich and Zurich. His chemical training was con- tinued at the University of Zurich under the Nobel prize winner, Professor Paul Karrer. Here he received the degree of Doctor of Philosophy in 1920 upon completion of a scholarly inaugural dissertation entitled, "Thioglu- koside." Subsequently he was associated closely with Prof. A. Hesse, of Berlin the well known authority on natural flower oils. Thus the course of Dr. Guenther's lifework had already been set at an early date.

ERNEST GUENTHER, THE SCIENTIST 287 understanding and without the continuous encouragement and moral support on the part of Mr. Leonhardt and his associates, the completion of the great work might have been delayed by many years, if not vitiated altogether. In concluding this all too inadequate statement, I cannot help returning to Ernest's humanistic and classical background which is so manifest in his outstanding personality and in his scientific writings, and of which he is so proudly conscious. And this is why I deem it only fitting to suggest that our contemporary, Ernest Guenther, the author of "The Essential Oils," can justly say of his accomplishment at least as much as Horace said of his own work (in the thirtieth ode of the third book): "Exegi monumentum aere perennius regalique situ pyramidum altius, quod non imber edax, non Aquilo impotens possit diruere aut innumerabilis anncrum series et fuga temporum. Non omnis moriar multaque pars mei vitabit Libitinam .... " "I have erected a monument more enduring than bronze, of regal pro- portions and higher than the pyramids, one that no wasting rain, no powerless north wind could destroy, nor the countless number of years and the flight of the ages. I shall not die completely, since a great part of me will remain immortal .... " ERNEST GUENTHER, THE SCIENTIST By EDWAKD E. LANGENAU THE CONTRIBUTIONS of Dr. Ernest Guenther to the field of essential oils and to the related fields of perfumery and cosmetics cannot be over- emphasized. Unfortunately, the scope of this address permits me to touch but briefly upon his training and upon his important contributions to this field. The formal education of Ernest Guenther included study at the Tech- nische Hochschule of Munich and Zurich. His chemical training was con- tinued at the University of Zurich under the Nobel prize winner, Professor Paul Karrer. Here he received the degree of Doctor of Philosophy in 1920 upon completion of a scholarly inaugural dissertation entitled, "Thioglu- koside." Subsequently he was associated closely with Prof. A. Hesse, of Berlin the well known authority on natural flower oils. Thus the course of Dr. Guenther's lifework had already been set at an early date.