The Hingham (Mass.) Journal states that the atmospheric phenomena known by the name of "mirage" was witnessed along the line of sea coast in that region through the whole day of the 1st inst. The mirage is an optical illusion arising from an unequal refraction in the lower strata of the atmosphere, causing remote objects to be seen double, as if reflected in a mirror, or to appear as if suspended in the air. This phenomena was seen by thousands of persons on the coast. Ships were seen sailing in the air, and distant parts of Cape Cod were distinctly visible in the vicinity of Boston ; large rocks and islands were clearly painted out upon the clouds, and various other singular appearances Were seen.