When the Society began its career, the three famous paleontologists— Leidy, Cope, and Marsh—were living and had several years of activity ahead of them. Wearied of the celebrated Cope-Marsh feud, Leidy had turned aside into other fields of research, and, though Marsh and Cope continued their work as long as they lived, nearly all of the discoveries upon which their great reputation was founded had already been made. A small band of younger men, several of them still living, was making its appearance, and these men gave promise of being worthy successors of the great trio.
A new era in vertebrate paleontology in America opened with the appointment of Henry Fairfield Osborn to the American Museum of Natural History, for this resulted in the development of that museum into the finest and most extensive establishment of its kind in the world. Needless to say, Osborn did not accomplish this . . .