Southern Harbors to be obstructed.
--It seems that the Lincoln Government have determined to resort to every conceivable method to make their blockade ‘"effective."’--Not having a sufficiency of war vessels to blockade all the ports and rivers on the coast, they are now obtaining, in Baltimore, all the old folks they can find — old oyster boats, pungeys, and some schooners formerly used in the Virginia trade — which are to be towed to the coast of North Carolina and sunk at the months of rivers and inlets, to prevent the ingress and egress of vessels to the ports of that State. The Exchange says (and other papers make similar statements) that ‘ "a large number of such vessels have been purchased, that others have been seized and carried off by the naval flotilla that has been cruising for some time past among the creeks and inlets of the Bay shore, that twenty or more of these vessels were loading with stone within a day or two past at Port Deposit, and that others have followed, or are about to follow, to be freighted in a similar manner."’--We hope our neighbors of North Carolina will be on the look-out for the expedition.--There are some long range guns along the coast, while we are informed that the guns provided for the steam towing flotilla are not of long range No code of international law sanctions such a mode of reinforcing a blockading squadron
