DEPARTMENT OF THE INTERIOR

UNITED STATES GEOLOGICAL SURVEY

WASHINGTON D. C., July 15, 1886

My dear Prof. Marsh,

In our work around Denver, and especially at Golden we have an upper series of beds, which from stratigraphy and composition we are sure are Tertiary. The paleobotanists find however no distinction between their leaves and those of the Laramie. Up to within a short time our search for animal remains in these beds has been fruitless. Recently a couple of young fellows not on the Survey have found some shells, and a piece of bone which doubtless comes from these beds. One of them (Cannon) says he was collecting when a student under Lakes, at Morrison in '77 or '78 and that a tooth was found in the Table Mountain beds (our Green Mountain series) and was sent to you. Can you remember anything about it or whether it was identifiable. Shall I send the material that we are enabled to collect together from these beds direct to you, or must they go through Washington red-tape. It will be some weeks before I go to Denver.

( Copy. )

New Haven, Conn., March 23, 1889.

My dear Emmons,

The three boxes of fossils arrived safely, and I enclose hehewith, duly signed, the proposed agreements in regard to them. I would gladly have signed half a dozen more, if I could have had the specimens a couple of months ago; but better late than never.

All the specimens from the Denver region are from the Laramie or something older, some of the genera represented being known both from the Jurassic and Cretaceous, but not later. Why have you not got near Denver simply two breaks in the Laramie? I know of several similar breaks in this great formation further north, more distinct, so far as fossils are concerned, if unattended by as great physical changes.

I will talk this all over with you when I see you next month in Washington.

( Copy. )

New Haven, Conn.,

March 23rd, 1889.

I hereby agree to return to Geo. L. Cannon, Jr., of Denver, Colo., certain vertebrate remains collected near Green Mountain, and sent to me in two boxes marked respectively No. 1 and No. 2, within one year from date, or in event of failure to return them within that time, to pay the sum of $100 for the same.

I also agree to return a fragment of remains of vertebrate animal in box accompanying above, which fragment is labeled -- Denver High School -- within six months from date, or in failure of so doing, to pay said Cannon the sum of twenty-five dollars for the same.

O. C. Marsh.

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