The account of the creature seen by the officers and crew of the _Dædalus_ excited more than the usual attention given to these stories; for the professional status of the observers guaranteed at once the veracity of their statement, and the probability of their judgment being accurate. Considerable correspondence ensued, including a very masterly attack upon the identification of the creature by Professor Owen, which will be again referred to further on. It also elicited another sea-serpent story which appeared in the _Bombay Bi-monthly Times_ for January 1849. I see, in your paper of the 30th of December, a paragraph in which a doubt is expressed of the authenticity of the account given by Captain M'Quhœ of the great "sea-serpent." When returning to India, in the year 1829, I was standing on the poop of the _Royal Saxon_, in conversation with Captain Petrie, the commander of that ship. We were at a considerable distance south-west of the Cape of Good Hope, in the usual track of vessels to this country, going rapidly along (seven or eight knots) in fine smooth water. It was in the middle of the day, and the other passengers were at luncheon, the man at the wheel, a steerage passenger, and ourselves being the only persons on the poop. Captain Petrie and myself, at the same instant, were literally fixed in astonishment by the appearance, a short distance ahead, of an animal of which no more generally correct description could be given than that by Captain M'Quhœ. It passed within thirty-five yards of the ship without altering its course in the least; but as it came right abreast of us, it slowly turned its head towards us. Apparently about one-third of the upper part of its body was above water, in nearly its whole length; and we could see the water curling up on its breast as it moved along, but by what means it moved we could not perceive.... We saw this apparently similar creature in its whole length, with the exception of a small portion of the tail, which was under water; and by comparing its length with that of the _Royal Saxon_ (about six hundred feet) when exactly alongside in passing, we calculated it to be in that, as well as its other dimensions, greater than the animal described by Captain M'Quhœ. I am not quite sure of our latitude and longitude at the time, nor do I exactly remember the date, but it was about the end of July. R. DAVIDSON, _Superintending Surgeon, Nagpore Subsidiary Force_. Kamptu, 3rd January 1849.