The Daily Herald

From the Baltimore Patriot of Saturday.

An Important Arrest.—For several months past, the Treasury Department has been in possession of information calculated to lead to the detection of the persons engaged in causing the destruction by fire, of the Treasury Office at Washington, about three years past.—On Wednesday last, a person was arrested in the city of New York, charged with firing the building with his own hands, hired to commit the act, as we have heard, by some of those who had committed frauds upon the Pension Office, which they wished to have destroyed to screen their guilt. Other persons, we hear, before this will have been arrested in the Western part of N. York, one in Vermont and another in Ohio. The person that was taken in New York, was brought on yesterday in the steam boat line in charge of Mr. Blaney, High Constable of Philadelphia, Mr. Keily, Deputy Marshal of Ohio, and Mr. Meritt, of the N. York Police. These officers left Baltimore this morning with their prisoner for Washington, where the trial is soon to take place.