LIEUT.. BROWNS REPORT, ihe o5stlqtciious 10 lie aoeigation q he

 .aeE4neas 344er.
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 Ckse{ E'gg g59cer: #srn--Tn ohedience to yonr instructions z inc 6th of February, directing me to Foceed to Arkansas Territory, and make H examination of the Arkansas river from hntonmept Gibson to its mouth, with a isw oto the renoyal of such snags, saw-- xrs, sunk# timber, rafts, and detached aasses ofSstone, or boulders, as may offer Ibstructioassto it's safe navigation," ! pro- seded ith ta. .dschargs the duty, aud nve the HHs.ssHbf Hs sp slflke the following re- Nk

 EThe Arkansasf next to the Nllssou- Kin size and lipaportance. among the west an tributames oe the Mississippi. Rising l the PoaAy Mountains, ii pnrsues ,o,wse yarioassg estimated, by its Hindings' n be from 2 GOO to 2,5oo miles in extent, hd epters the Mississippi al latitude 33 56 1orth, and longitude IA 10 west. In Its .eneral charactof, and the color ot its wa sss. t bears strong. resemblance to Red Ner. The quantity of water 1t discharges great. but less thani is due to its immense sxtent. which circumstance $ explained py Mpposing that large proportion ot taa Xhich it receives near it's source, E absorb "a in its passage through the sandy ana aflf z6il of the upper part of its course. In Ii: 7oo6s t is extremely irregular, both as t' Nason and quantity. The flood from th' Ncky Mountains, which is the prlncipa one, takes place usually in june, bearing Af. iA this particular. a resemblance to that lhe Missouri: but from a late period ID th |ill. through the winter and spring, the Il 5er is subject 10 various partial slses' pro t 't5eeding from is more important loWer IT |lRtaries. which vary very much ia the tiLn E6 tber occurrences, in their extent, and |zleir duration. During the present seasol sere was a food in janeary, reaching Ezkitbin two or three feet of ordinary hlle Eater. and since that time, by a suecessiS Ed partial rises, the river hos been genera E kept in good boating order, for tae ieN Efr 69C niles of it's course, and thus occu fsfence is not unfrequent. At other fme river, in January, February, and |

 esrF p,;f 5S;>Aagarch, Is at its extreme <

 stage. \ eentlssean, well acquainted " V

 de nasigation of fs.ee- s.a Aalansas' inform

 me, that on one occasion, in el'aeas q, e.,

 oreach Fort Gibson in steam boat Il,

 hemouh, he was five times obligeo so =

 6y for want of water, and five tunes he

 cd onwards by sudden rises, before hs 9s, 2

 eesded in reaching his destination. "'

 'he fser is. rising very fast, the poa.s . :;

 Sometimes obliged to lay hy for a seo,a ,, 'p U,

 h Consequence of the strength of 'he :

 rent From the best information ! =

 9sisla, therc appears, on an average d. ,'

 difference of 25 or 30 feet between ''le

 sis ot high and low water; i'll some P,'

 m0re, and in some less. In genera

 lowest water is expected in the four me

 lI9Fa IT the middle of July to the inido

 november, ard at this season the ,

 s0a's are usually entirely withdrawn

 the riyer.

 Vaut0nment Gibson is sit.latad ot

 ea bank of the Grand river, two mics