being nearly run out, the ship was hove to with her head to the west. There we lay drifting four weeks. Fell in with mountains of ice, commonly known as icebergs, of vast dimensions, and of almost every form. An estimate was made of the size of one supposed to be the largest seen. It seemingly was an hundred and fifty or two hundred feet high; and, as is a fact,[57] the volume of ice is to that of sea water as 10 to 9, consequently the ice, which rises above the water, is to that which sinks below as 1 to 9. Then allowing this mass to have been 150 feet above the water, and of regular shape, it would sink below the surface about 1350 feet, making a huge mass of some 1500 feet high. Capt. Cook, in his voyage in 1773, describes one as being 600 feet high above the water, making, as he estimated, 5,400 feet to be its entire height. "And yet," says Cook, "the sea broke over them." They exhibited for a few moments a view very pleasing to the eye; but a sense of danger soon filled the mind with horror; for had the ship struck against the weather side of one of those islands, when the sea ran high, she would instantly have been dashed in pieces. At length these islands became as familiar to those on board as the clouds and the sea. Whenever a strong reflection of white was seen on the skirts of the sky, near the horizon, then ice was sure to be encountered. Notwithstanding which, the substance was not entirely white, but often tinged, especially near the surface of the sea, with a most beautiful sapphirine, or rather beryline blue, evidently reflected from the water. This blue color sometimes appeared twenty or thirty feet above the surface, and was probably produced by particles of sea water, which had been dashed against the mass in tempestuous weather, and had penetrated into its interstices. In the evening, the sun setting just behind one of these masses, tinged its edges with gold, and reflected on the entire mass a beautiful suffusion of purple. In the larger masses were frequently observed shades or casts of white, lying above each other in strata, sometimes[58] of six inches, and at other times of a foot in height. This appearance seemed to confirm the opinion entertained relative to the increase and accumulation of such huge masses of ice, by heavy falls of snow at different intervals; for snow being of various kinds, small grained, and large grained, in light feathery locks, &c., the various degrees of compactness may account for the various colors of strata. The approximation of several fields of ice, of different magnitudes produces a very singular phenomenon. The smaller of these masses are forced out of the water, and thrown on the larger ones, until at length an aggregate is formed of a tremendous height. These accumulated bodies of ice float in the sea like so many rugged mountains, and are continually increased in height by the freezing of the spray of the sea, and the melting of the snow which falls on them.