The City Post-Office Robbery examination Concluded.
--Several hours were consumed yesterday by the C. S. Commissioner, Wm. F. Watson, in an examination of the charge preferred against A. B. Martin, a member of the Washington Artillery battalion, arrested at the Spotswood Hotel on Thursday last, by detective Roache, at the instance of Wm. H. Truchart, a clerk in the Richmond Post-Office, on the charge of purloining letter from the Post-Office. The prisoner was remanded for trial before Judge Halyburton, of the C. S. District Court, and allowed to give ball for his appearance, if he could.