The Cheesewring granite has been used in the London Docks, Westminster Bridge, the Thames Embankment, Rochester Bridge, the Docks at Copen hagen, the Great Basses lighthouse near the Island of Ceylon, and the tomb of the Duke of Wellington in the crypt of St. Paul’s. Waterloo Bridge is built of Cornish granite; and London Bridge of a porphyritic granite from Devonshire. 1 The Channel Islands. Large quantities of granite have been raised and exported from the quarries of Mount Mado and La Perruque in Jersey, as well as from Guernsey and the little island of Herm. Mount Sorel, Leicestershire. The syenitic-granite of Mount Sorel is highly esteemed in London and elsewhere, on account of its warm rose-tint—which renders it suitable for ornamental purposes—and as a contrast to the light grey or brown colours of the ordinary building stones. It is, however, extremely 1 Kaolin, or Porcelain Clay. This substance as used in England is chiefly derived from the decomposed granites of Cornwall and Devon, as well as at Fetlar, one of the Shetland Islands (Bristow’s Glossary of Mineralogy, 1861). Large quantities of this material are sent to Worcester and the Staffordshire Potteries, where, along with flints from the Chalk, and chert from the Carboniferous lime stone of Derbyshire, it is ground under water into a fine mud ; perfectly white, which is manipulated into various porcelain wares which vie with those of Dresden and Sevres in beauty of design and excellence of execution. The decomposition of the felspar in the granite is probably due to the percolation of water holding carbonic acid in solution.