Internal Improvements.—These consist of canals, rail-roads, turnpike roads, and the National road, now under the supervision of, and owned by, the State. The canalling is managed by a Board of Commissioners. The State canals were projected about 1823, and, considering the youthful character of the State, its want of funds and other circumstances, they are, undoubtedly, the greatest works ever executed in America.

The Ohio and Erie Canal connects lake Erie with the Ohio river. It commences at Cleaveland, at the mouth of the Cuyahoga, passes along that river and its tributaries, to the summit level, from thence to the waters of the Muskingum, and to the border of Muskingum county; from thence it strikes across the country past Newark, in Licking county, and strikes the Scioto, down the valley of which it proceeds to its mouth, at Portsmouth. The principal places on the canal are Akron, New Portage, Massillon, Bolivar, New Philadelphia, Coshocton, Newark, Bloomfield, Circleville, Chillicothe, Piketon, and Portsmouth. It was commenced on the 4th of July, 1825, and completed in 1832; and, together with the Miami canal to Dayton, cost about $5,500,000, and has greatly enriched the State and the people. Private property along its line has risen from five to ten fold.

LENGTH OF OHIO AND ERIE CANAL.

Miles.
Main trunk from Cleaveland to Portsmouth,310
Navigable feeder from main trunk to Columbus,11
Navigable feeder from main trunk to Granville,6
Muskingum side cut, from the Muskingum river at Dresden,3
Navigable feeder from the Tuscarawas river,3
Navigable feeder from the Walhonding river, 1
Total length of Ohio canal and branches,334

The Miami Canal commences at Cincinnati, and, passing through the towns of Reading, Hamilton, Middletown, Franklin, and Miamisburg, terminates at Dayton, 65 miles. It has been navigated from Dayton to the head of Main street, Cincinnati, since the spring of 1829. An extension of the work is now in progress, to be carried along the vallies of St. Mary's and Au Glaise rivers, and unite with the Wabash and Erie canal, at Defiance; distance from Cincinnati about 190 miles.

An act passed the Ohio legislature in 1834, for continuing the Wabash and Erie canal, (now constructing in Indiana, by that State,) from the western boundary of Ohio, to the Maumee bay. Operations have been suspended by the boundary dispute with Michigan.

The Mahoning and Beaver Canal has already been noticed, under the head of Western Pennsylvania. It is proposed to carry it from Akron, on the Portage summit, along the valley of the Mahoning river, to Newcastle, on the Beaver division of the Pennsylvania canal. Distance in Ohio, 77 miles. The work is in progress.

The Sandy Creek and Little Beaver Canal is in progress by a chartered company. It commences near the town of Bolivar, on the Ohio and Erie canal, in Tuscarawas county, and passes along near the line of Stark and Carroll counties to the Little Beaver in Columbiana county, and from thence to the Ohio river.

The Mad River and Sandusky Rail-Road will extend from Dayton, on the Miami canal, to Sandusky, through Springfield, Urbanna, Bellefontaine, Upper Sandusky, Tiffin, and down the valley of the Sandusky river to lake Erie. The route is remarkably favorable for locomotive power. Length 153 miles; estimated cost, $11,000 per mile. The work was commenced in September, 1835.

The Erie and Ohio Rail-Road is intended to be constructed from Ashtabula on the lake, through Warren to Wellsville, on the Ohio river, a distance of 90 miles. Other rail-roads are in contemplation in this State, the most important of which is the Great Western Rail-Road, from Boston, by Worcester, Springfield, and Stockbridge, through New York, by Albany, Utica and Buffalo, along the summit ridge, dividing the northern from the southern waters, through Pennsylvania, Ohio, to intersect the Wabash and Erie canal at La Fayette, in Indiana. From thence provision is already made for it to pass to the eastern boundary of Illinois, from which, a company has been recently chartered to construct it across the State of Illinois by Danville, Shelbyville, Hillsborough, to Alton on the Mississippi. It must be some untoward circumstance that shall prevent this splendid work from being completed the whole length before 1850.