Dr. Hamilton[262] states that an animal of similar appearance was again seen, in August 1819, off Nahant, Boston, and remained in the neighbourhood for some weeks. Two hundred persons witnessed it, thirteen folds were counted, and the head, which was serpent-shaped, was elevated two feet above the surface. Its eye was remarkably brilliant and glistening. The water was smooth, and the weather calm and serene. When it disappeared, its motion was undulatory, making curves perpendicular to the surface of the water, and giving the appearance of a long moving string of corks. It appeared again off Nahant in July 1833. "It was first seen on Saturday afternoon, passing between Egg Rock and the Promontory, winding his way into Lynn Harbour; and again on Sunday morning, heading for South Shores. It was seen by forty or fifty ladies and gentlemen, who insist that they could not have been deceived." The _Zoologist_ for May 1847 contains an account of a sea-serpent seen in Mahone Bay, about forty miles east of Halifax, by five officers of the garrison, when on a fishing excursion:--"We were surprised by the sight of an immense shoal of grampuses, which appeared in an unusual state of excitement, and which in their gambols approached so close to our little craft that some of the party amused themselves by firing at them with rifles. At this time we were jogging at about five miles an hour, and must have been crossing Margaret's Bay, 'when suddenly,' at a distance of from a hundred and fifty to two hundred yards on our starboard bow, we saw the head and neck of some denizen of the deep, precisely like those of a common snake, in the act of swimming, the head so far elevated and thrown forward by the curve of the neck, as to enable us to see the water under and beyond it. The creature rapidly passed, leaving a regular wake, from the commencement of which to the fore part, which was out of water, we judged in length to be about eighty feet, and this within rather than beyond the mark. It is most difficult to give correctly the dimensions of any object in the water. The head of the creature we set down at about six feet in length, and that portion of the neck which we saw the same; the extreme length, as before stated, at between eighty and one hundred feet. The neck in thickness equalled the bole of a moderate-sized tree. The head and neck of a dark brown or nearly black colour, streaked with white in irregular streaks. I do not recollect seeing any part of the body." Considerable interest was excited in 1848 by the account of a sea-serpent seen by the captain and officers of Her Majesty's ship _Dædalus_ while on her passage from the Cape of Good Hope to St. Helena, in lat. 24° 44' S. and long. 9° 22' E. In this case the usual concomitants of calm weather and absence of swell are wanting. The official report to the Admiralty is as follows:-- H.M.S. _Dædalus_, Hamoaze, Oct. 11.