Geo. James Longstreet, one of the most famous of the corps commanders of the Southern Confederacy, has lately wme to Chicago, accompanied by his wife to undergo ‘•ray treatment for cancer of the right eye. Longstreet hJ a of ^7°st Point and familiar friend of Grantlari?* ®'vnri 'vas °ne of the guests at Grant's wedding, with r ,was at APPomattox, where he had an interview friend and was treated so courteously by his old mnmonf it apparently* be was reconstructed from that fipsnf’a »i • afterwards held office in the South under tt-oq , ^ministration. Pickett’s division at Gettysburg sonmiv rfugs.troet,s corps, but Longstreet was not per-UDion lino avoraI)le to the plan of an assault of thelines on that third day. /