These scenes consist, in the natural part, of the most fantastic and exuberant workings of Natureʼs ever varying pencil. Here she has grouped assemblages of the most extraordinarily formed islets, twisted and split in every direction; some reaching above the regions of the clouds, and showing, in their pointed or overhanging heads, the most dreadful precipices that can be imagined; such is the island of FOULA, between the Orkneys and Shetland. In another place, a large island, which rises gradually on all sides from the sea to a great height, in the form of a parabolic conoid, has its body severed from the apex to the base, as regularly as if it had been the work of art; such is the islet EGLESHA, on the west coast of Shetland. A third form is that of an immense islet rising perpendicularly on every side from the subjacent ocean to a great elevation, having its whole body perforated with an arch, of such dimensions that a large vessel could sail under it without lowering her topgallant sails. In short it would require a volume to detail the astonishing operations of nature in these islands. The artificial scenery of Shetland consists in the numerous remains of ancient fortresses, hollow towers, castles, &c. Some of these scenes have been drawn by the author of this work; others which he had not an opportunity of visiting, he was furnished with sketches of, by a gentleman resident in UNST, and the whole he has consigned to the author of a work on Shetland, who intends publishing them. But to recur to the primary object of this publication; although the recent travels of HUMBOLDT, DEPONS, HELMS, &c., have considerably enlarged the circle of our knowledge of Spanish American Geography, yet there still remains a wide field for inquiry in those regions. When M. DE HUMBOLDT shall publish the remaining parts of his _Personal Narrative_, we shall certainly, from what he has already said on the subject, be better acquainted with a very interesting portion of the Trans-atlantic colonies of Spain, the kingdom of New Granada, and the province of Guiana, as his route was through the latter in his exploratory voyage down the Apure to the Rio Negro, and along the Cassiquiari, down the vast stream of the Orinoco. The viceroyalty of New Granada was nearly traversed by that illustrious savan, as he passed through the cities of Bogota and Guayaquil to the capital of Peru. Peru is, however, still imperfectly known on its eastern frontier; and the volcanoes, mountains and other striking features of that government remain yet to be explored and described. Chili is also very little known; the immense barrier of the Andean chain, offers, with the difficulty of crossing the Pampas of La Plata, many almost insurmountable obstacles to the European traveller from Buenos Ayres, and the great length of the navigation round Tierra del Fuego affords a considerable drawback to the adventurer who should wish to arrive in the Chilian regions by a sea voyage.