The singular conformation of this bird, so different in many respects from that of the Order to which both in its leading characters and in its habits it obviously belongs, rendered it for a long time one of the torments of ornithologists, who puzzled themselves in vain to assign it a definitive place in the system, and could not agree even with regard to the grand division of the class to which it ought to be referred. Thus M. Temminck was at one time inclined to refer it to the Gallinaceous Order; and M. Vieillot, after repeatedly changing his mind upon the subject, at last arranged it among the Waders, with which it has absolutely nothing in common except the length of its legs. It appears, however, to be now almost universally admitted that its closest affinity is with the Vultures, with which it agrees in the most essential particulars of its organization, and from which it differs chiefly in certain external characters alone, which unquestionably give to it an aspect exceedingly distinct, but are not of themselves of sufficient importance to authorize its removal to a distant part of the classification. It constitutes in fact one of those mixed and aberrant forms by means of which the arbitrary divisions of natural objects established by man are so frequently assimilated to each other in the most beautiful, and occasionally in the most unexpected, manner. The principal generic characters of the Secretary consist in the form of his beak, which is shorter than the head, thick, and curved nearly from the very base, where it is covered with a cere; in the long and unequal feathers which take their origin from the back of his head, and are susceptible of elevation and depression; in the naked skin which surrounds his eye, and which is shaded by a series of hairs in the form of an eyebrow; in the great length and slenderness of his tarsi, which form his most striking characteristic in an Order remarkable for a structure exactly the reverse; and in the shortness of his toes, which are terminated by blunted talons of little comparative size or curvature. The only known species measures upwards of three feet in length. Its plumage, when in a perfect state, is for the most part of a bluish gray, with a shade of reddish brown on the wings, the large quill-feathers of which are black. The throat and breast are nearly white, and the rest of the under surface of the body offers a mixture of black, red, and white, the plumage of the legs being of a bright black, intermingled with scarcely perceptible brownish rays. The plumes of the crest which ornaments the back of the head, and from the supposed resemblance of which to the pens frequently stuck behind the ears of clerks and other writers the name of Secretary was given to the bird, are destitute of barbs at the base, but spread out as they advance, and are coloured with a mixture of black and gray. Each of the wings is armed with three