Arrest of a Southern merchant in New York.
New York, Aug. 17.
--Thomas J. Serrill, a native of New Orleans, was arrested on the arrival of the Persia.
He had in his possession £45,000 of the notes of the Bank of England, the proceeds of a loan for the Confederate States, and numberless letters and important papers.
[We are informed that the name of the gentleman is Thomas S. Serrill.
He was formerly connected with the house of Lewis & Sterling, of Philadelphia, and is, we think, a native of that city.
He has been in the cotton trade in New Orleans for the last five or six years, and is well known there as a large cotton speculator.--Eds]