vallies where it is cut through to castellated & step like rocks of picturesque appearance. This is overlaid by the sandy clays & minor sandstones of the plains with their Ostrea remains & other fossils.

The exposed potions of the trap rock are are everywhere shattered & fissured & do not offer any chance of detecting glacial striation. The sedimentary rocks have suffered in the same way & besides are too soft for the preservation of such markings.

To Butte A 239°

To Butte B 261°

To edge of small buttes running N. from B (C) 270

To U.S.Cavalry camp (Capt Weir) about 15 m. away & N. of the line near two small lakes & a bluff 905°

To our camp in trap dyke valley 9 miles distant 4

To group of samll lakes N. of line (distant) 2700

To peak of Subsidiart Butte D 77.5

Bearing of Butte from camp 184°

Camp 9 m. N. of Butte 8 A.M.

B. 25.91

T. 62° Wind NW. Clear