On Monday, the fifth of July, two men, (Indians) natives of Gay Head, named Amos Jeffers, Jr., and Jeremiah Weeks, proceeded in a Vineyard sailboat on a swordfishing expedition off Noman’s Land. - Nothing has since been heard of them, and as the boat’s mainsail was picked up on Tuesday, the 6th, on Gay Head, the supposition is, the boat was stoven by the sword of a fish, and sank from under them. It is barely possible they were picked up by some vessel; but the impression is general that they have found a watery grave. They were both men of uncommon promise. Mr. Jeffers lately returned from sea, as first mate of the whaling bark Mary, of New Bedford, and was soon to have sailed from that port in the capacity of master.