The Eagle mentioned in the History of the Expedition of Lewis and Clarke, as cited in a preceding page, we are inclined to suspect to be the present species, but should not be surprised if it should be ascertained by succeeding naturalists to be the adult of the Washington Eagle. The great Eagle now before us has never been observed as yet by an American voyager, and few specimens only are contained in European museums. The only specimen in the United States is that in the collection of the Philadelphia Academy from which the drawing was made for the present plate. We have added as a suitable conclusion of our present article a translation of the original account of this Eagle as given by Pallas, and which will be found in his Zoology of Asiatic Russia, as cited above: “Steller, worthy of a better fate, first observed this remarkable species, and in his manuscripts briefly described it. Now, also, I have before me an elegantly prepared specimen from my friend Billings, who, with the last navigator, explored the ocean between Kamschatka and America. This very large bird is frequent in the islands between Kamschatka and the American continent, especially in the islands noted for the unfortunate shipwreck and death of Bering. It appears very rarely in Kamschatka itself. In the highest rocks overhanging the sea, it constructs a nest of two ells in diameter, composed of twigs of fruit and other trees, gathered from a great distance, and strewed with grass in the centre, in which are one or two eggs, in form, magnitude and whiteness, very like those of a Swan. The young is hatched in the beginning of June, and has an entirely white woolly covering. While Steller was cautiously viewing such a nest from a precipice, the parents darted with such unforeseen impetuosity as nearly to throw him headlong; the female having been wounded, both flew away, nor did they return to the nest which was watched for two days. But, as if lamenting, they often sat on an opposite rock. It is a kind of bird, bold, very cunning, circumspect, observant, and of savage disposition. Steller saw a Fox (_Vulpes lagopodus_) carried off by one and dashed upon the rocks, and afterwards torn in pieces. It lives also on dead substances cast up by the sea, and various offscourings of the ocean.” DESCRIPTION AND TECHNICAL OBSERVATIONS. Genus Haliaëtus. Savigny, Description of Egypt, Zoology, p. 85, (1809.) Size, large. Bill, strong, straight at the base, hooked and very sharp at the point, sides of the bill compressed, margin of upper mandible, slightly festooned. Wings rather long and pointed, formed for rapid and vigorous flight; tail moderate. Tarsi short, very strong, and with the toes, covered with scales; claws very strong, curved and sharp. About ten or twelve species known, which are scattered throughout the surface of the globe.