The purpose of this symposium is not to give an inventory of present information on sedimentation, nor is it to lay before you the definite solution of specific problems; but it is rather to discuss certain needs in the light of what we now know, and to consider ways and means of filling those needs. Instead of “symposium,” perhaps “conference” would be a more appropriate name, for geologists should confer regarding this matter, and it is hoped that discussion will be full, and that those here will give others the benefit of many suggestions.
Since geologists generally will admit that one of the objects of the investigations of sedimentary rocks and processes of sedimentation is to aid in understanding the history of the earth, it is pertinent to ask how such researches can help in the solution of problems of that kind, and the inquiry . . .