Th« Chesapeake and Ohio Canal.W«n i-i’-’ :S • IThe present Pseeident and Board of Director# of the Canal, are giving evidence that they tiafk are mil a proper appreciation of the importance of the their bt work committted to their charge •, and there i« good ground for the indulgence of the hope that the oft deferred proepect of a regular business on { the Canal ia to be realised at no distant day.Some moot ha since a contnct waa awarded to Messrs John ilumbird and I. Ilobiftnon, for the construction of a substantial atone lj«n m place of the leaky affair known as Dam So. 3 — and ille work is now in progress.At the meeting of the Hoard in Washington, la it week, a contract was given to Meseri. Gor-nmn, Brown A Clark, for the construction of a substantial atone Dam at No 4.OwingBallon* atford t unable coal, ai c.r#s i*y e»ensed w Inch l have ii learn i place f m h i, rn i1856,i tran*r»lt;Oh ia IIis by t to t h r tThere have been frequent interru^tihne of the ! andr at .lot,ISI-ron.-in*Iv•»'it. v prtd.navigation, by heavy tiidfs of rock into the Ca mil, at the East end of the runnel, »rd from the character of the mountain at that point* further slides rnty be anticipated. To facilitate the removing of such obstruction*, * short rail road is in the course uf construction at that point.The steam pump* erected several years since, h iving failed to accomplish the work it was to have performed ; the Board determined to hate the structure taken down, and re-built. And we on Jri stand that si commute* of the Board, who, have spent several days in examining the Canal i hi tins vicinity, have awarded the contract for rebuilding the pump to John Beull, Esq for a s«rn something leas than the original contract ; the work to be completed by the 1st day of June en- j suing.The eV a Ilia minus, struct i during let Irr eleven preaeri Hint,(whirlport to hcievf while lion bThiwas n14 iltd,concr their their eases t heir