THE PlTlBBllithil GAZETTE PUBLISHED BY WHITE & oo FRIDAY MORNING. SEPT. 21,7850 o.Aavasviens swum radaesseitatould their favors Solon 6e. K., and as early 'minds, aa ... • bed tlmr !V.V. antral Boston, and adr MT MI:1U Ild wordel .fogll ad fro Alsn maws in__ ..--- charge from Ail effies. elms:nun Demi Oenrrrn—Advertisements and nese riptlone, for tics paper, 'rill Da received and enearded from Ole office. DMILOORATIO WHIG STAID TIOICZT 102 CAUL anskrairogn. JOSHUA DUNO•N, Of Backe Comsi. rot Am.% arnuL HENS% W. SNYDER, On •nr•Oftr 4 / 1 11:17. OVITILL. 408EPH DENO/31/00N, 01 Wastd4rtonComq., astimasonla aad Whig !laminations for Allegheny Comity. Vol TRIM MOM COIVIU" 10110 EAR E. 1101ARis 101 .11.010 , 034011, MITI lIIM COINZZIk HA¢ISAS D sl 1, ==l JAMES CAROTHERS, os IFILVIES. tot •SINISIDLT, MORGAN ROBERTSON, Pidebabilb T. J. BIGIIAIL Lever ER CURL R. C. WALKER. Musbeik. JOHN 24 , CLUSAF.ti, Robinson. JANES FIFFE. &Lowden. ntrITICT AIRWAIT, FRANCIS C. FLAMM% Citut,loll6 esrarrasa BOYLES, Nonh Farm. 111M1101, Wlit. FLINN, !AIM 91:_a1.12 D. N. counmsv, Ohio. xr SEE NCIT PAGE FUR Weal. MATTEIS TELEGRAPHIC NEWS, e. 4. Raz En TICS Itsysz.—Our rivers are now lance navigable order, with every probability of a con tinuance throughout the season. The rains hare boen heavy ; on Wednesday sight it poured down in walnuts, and the sudden rash of water bastion° some injury to the bailie of the canal above this city, but transportation will not be hindered there by, so the river an be mod as far as Freeport. We may now look-for • brisk aminess for acme months, and we heartily wish all our merchants, manufacturers, and business men is genarall a prosperous fail ae•son. The route through P.m• burgh, between the cut and west, will this kneed wittier present nursetkuts over any other; owing to the completion of the Central Rail Road to Rol lidaygengh. Shia will, we doubt not. produce • tensible effect upon the business of the plate. Improvement of the Olds Ham I A novel project has been stated for the improve merit of tee onvigstion of the Ohio, in low water, Its originator is Cam Hurt, Jr., Civil Engineer • gentianan whose abilittes sod oformattote ace undoubted. to furtherance of his pith, he bet me monetized Congeal to grant an appropriation to test its utility, and the committee to whom the tee. moral tens referred have reported favontbly through their Chairman. Mr. Underwood. From this report we have derived the following facts in . relation to the project. The plan 'proposed by Mr. Diet is exceedingly simple, end may be explained in • tow words. He alleges, truly, that the navigation of the Ohio, and thatof many other rivers dowiog intothe • it always good when the channel is well supplied with water, and that it is often interrupted, and sometimes for very long periods, by • maths or less deficiency of the natural supply of water.— He proposes, therefore, to correct the faults of the navigation simply by furnishing water to the river .s=nic . .s. - .torieMitivigicadniiiiitbeetarecitalAuto gier l flood, and from which it may be discharged by ap. preprints sluices and valves whenever it is needed to replenish the failing channel. The physical questions which arise in deciding on the prectiCs bility or propriety of adopting this plan see Finn, what is actually the gratuity of water which it would be yeomanry tosupply per hour, or per diem to maintain the narguion at any given height during the ordinary draughts of summer , and, Secondly, where can this water be collected and stared in sufficient volume to secure a fop &applydaring the sixth or eighty days of low water which frequently occur In the summer months! • Oa the tint point, the testimony offered by Mr. • Met, was calmly satisfeetimy to the committee It is founded on actual observations and swap made by himself, on the discharge of the Ohio , river over the bar at Wheeling, in almost ever: navigable condition of the stream. The (acts ob. I tained from these measurements he has carefully eppilat to authentio records of the daily height of the waif in the-channel, at Wheeling se as to determine the number-of cubic feet which Aew past that point, day by day, through a period of eir, consecutive yaws. The results el this inquiry demonstrate that the volume of waxer which is annually dwehruged by the river would be sufficiEnt, if it pawed off std. Calmly, to maintain a Constant depth of nine feet on the Wheeling bar. The fact is thus dub fished that 'heats abundance of water supplied by "nature telecom i permanent navigation on the river, if Übe in the power oil man to control, or only partially to