Martinsburg Gazette

* American Ingenuity,

We learn from the New York Courier that important improvements have been made in the saw mill, by Col. James Hamilton, of that city, which are destined, at no distant day, to effect a great revolution in ship building. The British Government expended several thousand pounds sterling many years since in attempts to invent effective mechanical means to convert timber into the forms required for ship building, without arriving at any successful result. "It has been reserved for a son of New England," says the Courier, "after several years severe study and experiment, to provide any workman the means of directing a powerful mill-saw in the most tortuous curves which can ever be needed, while at the same time, the mill itself, adjusted by a beautiful, because simple arrangement, will roll the timber while the saw is cutting. so that any given amount or angle of bevel can be cut in any length, with the same mathematical certainty that is attended on any other well grounded mechanical combination."

It is further stated that any well-built existing saw-mill can have all these new powers attached to it at a moderate expense, and yet be made ready to use for common straight sawing, while a log is being rolled into its place for work. In short, while the capacities of the saw-mill are thus extended by a new means to an almost indefinite extent, it does not lose any previously existing facilities.