For the third annual meeting of the Paleontological Society, held at Washington, it was suggested by several members of the Council that a portion of one day might well be devoted to a Symposium on Ten Years’ Progress in Vertebrate Paleontology. This was approved by the remaining members, and the Secretary was instructed to arrange such a symposium, following an outline which had been submitted by Vice-President W. D. Matthew. As the time limit on these papers had necessarily to be short, little detail could be given, but in order that certain phases of the subject be discussed it was suggested that each participant include, if possible, remarks on the following points:
Status of our actual knowledge and principal material in different museums which has been brought together in recent years.
Theories accepted and rejected in recent years.
Hypotheses on trial.
Important investigations and explorations . . .