On descending the northern side of the granite ridge, a curious atmospheric phenomenon is frequently observable,--the clear and cloudless sky becoming suddenly dense and hazy; the change is evidently occasioned by the condensation of the vapours contained in the warm and rarefied air of the Mount's Bay, by the colder one which blows from the Bristol channel. Amidst wild and rugged hills the road winds to Saint Ives, in the course of which, the geologist will have many opportunities of furnishing his portfolio with sketches, in illustration of the changes which time and weather produce on Granite; huge blocks of this stone lie scattered on all sides, while stupendous masses are seen on the hills above in different stages of decomposition, and which from their threatening attitude, would appear as if in preparation to join their former companions in the plains below. SAINT IVES. This populous sea port and borough stands on the shores of the Bristol Channel, in a very fine bay bounded by bold rocks of _Greenstone_ and _Slate_. The latter of these rocks is in many places undergoing rapid decomposition, in consequence of which large masses of the Hornblende rock have fallen in various directions, and given a singular character of picturesque rudeness to the scene: this is remarkably striking in the group of rocks which constitute Godrevy Island. Saint Ives is a populous sea port, of very considerable antiquity, deriving its name from that of _Iia_, a religious woman, who came hither from Ireland in about the year 460. The Corporation, which obtained its powers from a charter granted by Charles the First, consists of a mayor, recorder, town-clerk, twelve capital burgesses, and twenty-four inferior burgesses. The Borough returns two members to Parliament, a privilege which was conferred in the fifth year of Queen Mary; and the right of election was vested in all the householders in the parish paying scot and lot. In the year 1816, the magistrates, and trustees of the Pier and Port of Saint Ives resolved to extend the former, and to construct a breakwater, in order to shelter it. The undertaking has been commenced, but it is at present far from being completed. Saint Ives is the birth place of the _Reverend Jonathan Toup_, Rector of Saint Martin's near Looe, the learned annotator of _Suidas_, and editor of _Longinus_. His father was formerly the lecturer of this town.