have something to say in regard to the correlation of this western paleozoic with that of the east.



In two or three weeks more we will have covered the Invertebrate localities, and their, if there are no objections on your part, I will return to Pittsburgh.



I have some articles in manuscript which ought to be gotten ready for the press as soon as possible, and if Mr. Prentice is not otherwise engaged, there are a number of specimens that ought to be figured at once.



Should think I would probably be ready to return about the first week in October