finding. I must nevertheless urge you to get to work on the quarry and push forward the enterprises for which we are paying you and your associates. The improvement of your associates. The improvement of your property is a private matter and does not come within the sphere of the activities of the Museum. Your letter, which is principally devoted to an account of your work at road-building, throws hardly any light whatever upon what is being done at the quarry, and cannot fail to excite in my mind the appreshension that the main purpose of our work there is being to a certain extent lost sight of in these other things. I may be entirely wrong in this, but I am extremely solicitous that this work should go forward in the right way. In one of your former letters you informed me that you were engaged in working out a skeleton of an animal related to our Apatosaurus which has already been mounted at the museum, and had hoped you might find the head of the animal in connection with the cervical vertebrae or in such contact as to settle once and for all what kind of skull this creature possessed. I want this work pushed. I am engaged in working at the drawings and manuscript of the oseteology of Apatosaurus, and the work you ar doing is calculated, I think, to help me. I want it prosecurted with vigor, and side issues should not have the right of way. I am in receipt of a lette from Henry Fairfield Osborn in which he informs me that the specimen of Promonotherium skull. American Museum No. 9740, from the Madison beds of Montana, was not returned by you to the American Museum of Natural History at the time when you returned the material which they loaned you in order to prepare a paper upon the material in their collection which was publication