Villa Franca is a small, but strongly fortified town, distant about two miles from Nice, built at the extremity of a fine harbour, in a situation admirably adapted for the site of a more important place. It consists of very indifferent buildings, and its streets are narrow, and wretchedly paved. Nice and its environs do not offer a very extensive field to the naturalist. The surrounding mountains are, however, covered with a great variety of plants during the whole year; and, of course, the botanist will find ample amusement. The mineralogy of the neighbourhood is but limited, the whole of the hills around the city consisting chiefly of limestone, with some few beds of gypsum. In the beds of the mountain torrents, portions are occasionally found of granite, gneiss, clay-slate, flinty-slate, serpentine and feltspar; but these specimens so small and so much weathered, that it is often difficult to distinguish them. The geology of Nice is more interesting; the calcareous rocks afford many specimens of what the French call the _breche osseuse_, in which small fragments of bones are cemented together by argillaceous matter, which has acquired a reddish colour from the presence of iron. Near Villa Franca some of the limestone contains a great number of shells, the species of many of which still exist in the Mediterranean. The rising grounds near the Var are wholly formed of a coarse breccia, the cement of which is argillaceous, impregnated with iron; extensive excavations have here been made to procure clay for the manufacture of tiles, in which great numbers of shells are found imbedded, with occasional vegetable remains. I believe the sea-shore produces a number of shells which would be interesting to the conchologist.