All day we drive on the west and south of the Laramid granitic hills either over the Tertiary or on the Cret., ? Permian, as thus the Triassic. At Sheep Creek the Triassic red beds are present in low sand ridges for some miles around. The beds are streaked in all directions by gypsum or seemday deposits. On we near again the granitic hills the Cret. appears. Aug 22-29 Tuesday Camp XV & XVI. As we retired last night the atmosphere was warm but before midnight the wind began to hard and this morning it is cool and windy, believe camp by 8 and reach Bear Creek near Ledge (cabout 2 and miles) eve Laramie Peaks by 12.30. Our camp is beautifully situated in a narrow valley surrounde by high grass and an abundance of flowers. A panel house was once situated here but now nearly entirely disappeared. In the afternoon I go with Cameron collecting plants first on the higher drier