Geological Structure of Malta.—The Island of Malta is entirely composed of Tertiary aqueous rocks, which lie in a nearly horizontal position, but which, being traversed by several faults, are found at very different levels. This horizontal position of the strata is interesting, as it is seldom seen in small islands situated so far from the main land; and it is probably to be accounted for by supposing that any unequal pressures which might have occurred during the upheavels of the Island, expended themselves in the production of faults, instead of inclinations and contortions of the strata.