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coal and shale, twelve feet thick, resting almost directly upon Triassic marls, and underneath a yellowish sandstone filled with dicotyledonousleaves. At Camp 96, and at Oraybe, he found above this bed, green andblue shales two hundred and fifty feet thick. Toward the base this seriescontains Ammonites percarinatus, Inoceramus Grispii and Gryphma navia,while toward the top it shows Pinna (?) lingula, Gryphma Pitoheri, withbeds of lignite, above which are impressions of Platanus , Alnus, Quercus ,etc., along with Sphenopteris. From the Moqui country eastward forabout twenty miles, these beds are continuously in sight; but, at length,they under-run a mass of Tertiary rocks, which Dr. Newberry thinksmay prove equivalent to the White River Group of the Upper MissouriRegion. At Camp 100, beyond the eastern border of this Tertiary basin,a group of lignites and brown sandstones is found between the Triassic and Cretaceous , but it is not persistent. Near Fort Defiance, the LowerCretaceous Series is seen resting on the Triassic and consists of “greenand dove-colored shales, brown and greenish sandstones, brownish-yellowconcretionary limestone containing Gryphma Pitcheri, and beds of lig-nite.” The section here is about the same as at Oraybe. At Campbell’sPass, the section is as follows :

1. Cretaceous sandstones, shales, and lignites. 700 ft.

2 and 3. Marl Series.. I. 750 ft.

> Triassic.

4, 5, and 6. Salt Group ). 520 ft.

7. Carboniferous limestone.

The shales in No. 1 contain Gryphma Pitoheri.

The same section was traced by Dr. Newberry directly to the RioGrande, and at Galisteo Creek, not far from Santa Fe , the section is :

1. Cretaceous sandstones and shales with beds of lignites.

2. Red and white marls, all somewhat indurated, with silicified wood.

3. Soft red sandstones of the Salt Group.

Above these are the Santa Fe marls which rest unconformably uponthe Cretaceous .

Dr. J. L. Leconte’s notes* give few details respecting this region, butthey serve to confirm the earlier observations by Dr. Newberry.

In 1869, Dr. Ilayden visited Santa Fe and its vicinity. His notes aregiven in his report for that year. The section obtained by him at Santa Fe is certainly eccentric. On Galisteo Creek, he identifies No. 2 and 4of the Cretaceous . The remainder of the section is as follows, ascending,

1. Goal Group, with abundant impressions of deciduous leaves, restingconformably upon well-marked Cretaceous strata.

2. The Galisteo Sand Group, consisting of variegated sands and sandrstones, overlying conformably the Goal Group, and concealing it on theeast and northeast flank of Placiere Mountain. This group shows pecu-liarities here, not seen in the lignite series elsewhere. The color varies

* Notes on the Geology of the Smoky Hill Eoute.