Drewyer and J. Fields set out early this morning in conformity to my instructions last evening. they returned at ½ after 12 OCk. and informed me that they had proceeded down the river to the place from which I had returned on the [blank] of June last  and that it was 6 miles distant. they passed the entrance of buffaloe Creek at 2 ms. the course of the river from hence downwards as far as they were is N. 80 E. they killed 8 deer and two Antelopes on their way; most of the deer were large fat mule bucks. having completed my observation of the sun's meridian Altitude we set out, ascended the river hills having passed the river and proceeded through the open plains up the N. side of the river 20 miles and encamped.  at 15 miles we passed 〈the〉 [illegible] a large creek  on N. side a little above it's entrance; there is but little running water in this creek at present, it's bed is about 30 yds. wide and appears to come from the broken Mountains  so called from their raggid and irregular shape there are three of them extending from east to West almost unconnected, the center mountain terminates in a conic spire and is that which I have called the tower mountain they are destitute of timber. from the entrance of this creek they bore N. 10° W. the river bottoms are usually about ½ a mile wide and possess a considerable quantity of timber entirely cottonwood; the underbrush is honeysuckle  rose bushes  the narrow leafed willow and the bush which bears the acid red berry called by the french engages grease de buff. [NB: buffaloe grease]  just as we halted to encamp R. Fields killed a mule doe. the plains are beautifull and level but the soil is but thin.  in many parts of the plains there are great quantities of prickly pears. saw some herds of buffaloe today but not in such quantities as yesterday, also antelopes, wolves, gees, pigeons, doves, hawks, ravens crows larks sparrows &c. the Curlooe has disappeared.
|Observed Meridian Altd. of ☉'s L. L.||}||59° 35'|
|with Octant by the back observatn.|
Latitude deduced from this observation. [blank]
|S. 80 W.||20||Ms. up Maria's river to the place of our encampment on it's N.
side. passed a large creek on South Side  with some timber
in it's vally at 8 ms. also another large creek [ EC: Sweetgrass
Creek ]  on N. side at 15 ms. this last is 30 yds. wide but little
water at present. the bluffs of the river and creeks are steep
and principally formed of earth, though there are some-
times thin stratas of freestone intermixed near the top of the