CHAPTER XI.
FROM CAPE SAN BLAS TO ST. MARKS. A PORTAGE ACROSS CAPE SAN BLAS.-- THE COW-HUNTERS.-- A VISIT TO THE LIGHT-HOUSE.-- ONCE MORE ON THE SEA.-- PORTAGE INTO ST. VINCENT'S SOUND.-- APALACHICOLA.-- ST. GEORGE'S SOUND AND OCKLOCKONY RIVER.-- ARRIVAL AT ST. MARKS.-- THE NEGRO POSTMASTER.-- A PHILANTHROPIST AND HIS NEIGHBORS.-- A CONTINUOUS AND PROTECTED WATER-WAY FROM THE MISSISSIPPI TO THE ATLANTIC COAST.