Melancholy and fatal Accident.— About 3 o'clock on Saturday morning last, four porters and as-sistant pilots, named John Gilbert, Joseph Gilbert (brothers), George Bryant, a brother-in-law of the Gil-berts,  and James Polkinghorne,   went  over Hayle Bar, for the purpose of fishing in the bay ; but not proving successful, about 6 o'clock they agreed to return, and when on the bar,   the wind which was then blowing a fresh breeze from the N.E., and a strong ebb, caused a ripple on the water, but there was no ground sea. It was thought advisable to take in some of the canvas,and when in the act of lowering the mainsail, the boat capsized, filled, and soon turned bottom upwards.    Three of the men speedily got on the boat, but the other unfortunately became entangled under the boat with the sails ; and whilst endeavoring to extricate himself, he heard one of the three who were on the bottom of the boat say " poor Polkinghorne is gone" ; but by a sudden effort he suc-ceeded in gaining the surface of the water and joining the other three. The whole of them held on the boat for about  half an hour, when John Gilbert became exhausted, was washed off and drowned.   Soon afterwards, George Bryant experienced a similar fate.     The perilous situa-tion of the other two was seen by Thos. Gall, the ferry-man, who hastened up the harbour, and gave an alarm .   A boat was speedily manned,  and the two remaining poor fellows, named Joseph Gilbert and James Polking-horne, were rescued from a watery grave. They were put into St. Ives,  where they were humanely treated,  and sent home by land.    Gilbert has left a wife, daily expect-ing to he confined, and four children, to mourn his loss, being totally unprovided for;  and Bryant has left a wife and two children similarly situated.     Their bodies have not yet been found.    There is an old tradition existing here that from time immemorial there has always been one person drowned on Hayle Bar in 7 years,   or two in 14 years; and for the last 35 years it has proved to be true.