SLITTING MACHINERY—U. S. Circuit Court, New York; Judge Nelson presiding—T, B, Tappan against P. Ernst, for the infringement of a patent granted to Pearson Crosby, Nov 3, 1841, and re-issued March 10, 1849, for improvements in the machine for re-sawing boards and other timber. The defendant alleged that his machines, commonly known as the Wells' machine, were no infringement of Crosby's patent That Wells has a patent for his machine, c.: that the defendant had done but very little work with his machines since the re-issue of Crosby's patent. The Jury, under the charge of the Court, found a verdict for the plaintiff for $350. This case was decided on the 9th inst.