Passing the narrows (where the width is a mile and a quarter) strongly guarded by fortifications, of which Fort Santa Cruz, an extensive work, with several tiers of guns occupying a rocky point, is the principal, the harbour widens out with beautiful sandy bays on either side, and rocky headlands covered with luxuriant vegetation. Here the view of the city of Rio de Janeiro is magnificent. The glare of the red-tiled buildings, whitewashed or painted yellow, is relieved by the varied beauty of the suburbs and gardens, and the numerous wooded eminences crowned by churches and other conspicuous public edifices. Beyond the city the harbour again widens out to form an immense basin, studded with green islands, extending backwards some seventeen or eighteen miles further towards the foot of the Organ Mountains, remarkable for their pinnacled summits, the highest of which attains an elevation of 7800 feet above the sea. The harbour presented a busy scene from our anchorage. The water was alive with small craft of every description, from the large felucca-rigged boat down to the fishing canoe simply constructed of a hollowed-out log, and steamers crowded with passengers plied between the city and the opposite shore. The seabreeze died away, and was succeeded by a sultry calm; after a short interval, the grateful land wind, laden with sweet odours, advanced as a dark line slowly stealing along the surface of the water, and the deep boom of the evening gun echoing from hill to hill may be said appropriately to have closed the scene. CITY OF RIO AND ITS NEIGHBOURHOOD. Landing at the Largo do Paco, or palace square, my first favourable impressions of the city of Rio de Janeiro were somewhat lessened by the stench arising from offal on the beach, and the vicinity of the market, under the conjoined influence of a perfect calm and a temperature of 90 degrees in the shade. The palace, now used by the emperor only on court days, has two sides of the large irregular square in which it is situated, occupied by shops and other private buildings. Close by is the market, which the stranger, especially if a naturalist, will do well to visit. The variety of fruits and vegetables is great, that of fish scarcely less so. On the muddy shore in the background, the fishing canoes are drawn up on their arrival to discharge their cargoes, chiefly at this time consisting of a kind of sprat and an anchovy with a broad lateral silvery band. Baskets of land crabs covered with black slimy mud, of handsome Lupeae, and the large well-flavoured prawns, called Cameroons, are scattered about, and even small sharks (Zygaenae, etc.) and cuttlefish are exposed for sale.