“ Such, in brief, are the long-continued and successful labors of one of the most esteemed veterans of German science, of one whose work and influence have contributed much to give Germany of to-day the intellectual leadership of mankind. ”

“ Simple, kindly, possessed of a genial humor which never wounds, enthusiastic in his work, and ever ready with aid and counsel, Ludwig must be beloved by those who work under him: hence, to their pleasure in a worthy bestowal of the Copley medal, English physiologists have the further joy of seeing a beloved master publicly honored. In both these respects they will have many warm sympathizers in the United States. For years the Leipzig laboratory has been the headquarters abroad of young American as well as English physiologists ”

“ His researches on the development of the intestinal worms, and also those on parthenogenesis, opened new fields of thought and the first-mentioned were of great practical utility to mankind. His monograph on the fresh-water fishes of Europe is the standard authority on the subject. Together with Kölliker, he founded the famous Zeitachrift für wissenschaftliche zoologie, a journal of the very highest character. The museum at Munich, of which he had charge, is a beautiful monument to his scientific and judicious administration. ”