With respect to the subjects of exhibition, they are chiefly portraits of the most noted chiefs of the various tribes that formerly roamed at large over the vast territory of which they were the natural proprietors. There are also some of the females of note and others in early life, who display attractions of feature and expression which would not discredit the most civilized people. Amongst the chiefs of greatest notoriety here is the celebrated chief "Black Hawk," on whose keen eye and determined brow "no compromise" is plainly written by the hand of nature. The eldest and second sons of this chief are here also, and are worthy of the sire from whom they sprung. There are also several other distinguished warriors of this tribe, which is denominated the Sacs (Sauskies). There also are distinguished chiefs and warriors of the following nations: the Konzas, Osages, Camanchees, Pawneepicts, Sioux, Missouries, Mandans, Black Feet, A's-sin-ne-boins, Delawares, Choctaws, Cherokees, &c., amounting to some hundred portraits; besides views of fine scenery, buffalo-hunting, war and other dances; a variety of weapons, dresses, some scalps, a wigwam, &c. We hope soon to give a few interesting details. ----*---- ATLAS. _Catlin's Indian Gallery, Egyptian Hall._--A room 106 feet in length and of proportionate breadth and height, is occupied exclusively with this most interesting exhibition. Its pictorial portion consists of a vast series of portraits of the chiefs, the braves, the medicine-men, and squaws of the numerous tribes and nations of Indians--the aborigines of North America. Another lengthened series consists of landscape views of scenery, the rivers, mountains, and prairies--the homes and hunting-grounds of the Red Men. Illustrations of manners and customs, including some of the most curious and valuable portions of the gallery, form a third series of pictures, and these efforts of the pencil extend to upwards of 500. They are not offered as specimens of the art, although in that light they are by no means unworthy of attention, but as a pictorial history of nations about to be swept by the tide of civilization from the surface of the earth. As these bold sketches were executed in the wigwam, in the tent, in the steam-boat, in the forest, in the canoe, in storm and sunshine, amid strife and smoke, and every possible variety of interruption and annoyance, their existence is a miracle, and the artist may be proud of the fire and spirit, the truth and energy, yes, and the freedom and power with which he has, under such circumstances conveyed to canvas the vivid impress of the ancient nobles of the forest and the prairie.