PLYMOUTH.

The port of Plymouth comprises what are called the "Three Towns"—Plymouth proper, covering about a square mile, Stonehouse, and Devonport, where the great naval dockyard is located. Plymouth Sound is an estuary of the English Channel, and receives the Plym at its north-eastern border and the Tamar at its north-western, the sound being about three miles square and protected by the great breakwater a mile long, with a lighthouse, and defended by forts. The Plym broadens into the Catwater, used as a haven for merchant-vessels and transports and capable of furnishing anchorage to a thousand ships at one time. The Tamar broadens into the Hamoaze, which is the naval harbor, and is four miles long, with sufficient anchorage-ground for the entire British navy. Sutton Pool is a tidal harbor now used by merchant-vessels. The coasts of Plymouth Sound are rocky and abrupt, and strong fortresses frown at every entrance. It is the naval dockyard that gives Plymouth its chief importance: this is at Devonport, which is strongly fortified by breastworks, ditches, embankments, and heavy batteries. The great dockyard encloses an area of ninety-six acres and has thirty-five hundred feet of water-frontage. There are here five docks and also building-slips, where the great British war-ships are constructed. Another enclosure of seventy-two acres at Point Keyham is used for repairing ships, and a canal seventy feet wide runs through the yards to facilitate the movement of materials. Immense roofs cover the docks. East of Devonport, divided from it by a creek, and adjoining Plymouth, is Stonehouse. Here are the great victualling yard, marine barracks, and naval hospital. The Royal William Victualling Yard occupies fourteen acres on a tongue of land at the mouth of the Tamar, and cost $7,500,000 to build. Here the stores are kept and naval supplies furnished, its great features being the vast government bakehouse, the cooperage, and the storehouses. Its front is protected by a redoubt, and to the eastward are the tasteful grounds of the Earl of Mount Edgcumbe's winter villa. The marine barracks, which have the finest mess-room in England, will accommodate fifteen hundred men; the naval hospital, northward of Stonehouse, will furnish beds for twelve hundred. There are three thousand men employed about these great docks and stores, and they form the most extensive naval establishment in the world. Near Mount Wise are the Raglan Barracks, where there is a display of cannon taken from the Turks.

In Plymouth Sound is a bold pyramidal rock, the Isle of St. Nicholas, which is a formidable fortress. Mount Edgcumbe is on the western shore, and on the eastern side is Plymouth's pretty park, known as the Hoe, where the old Eddystone Lighthouse will be set up. Having come down the Plym, we will now ascend the Tamar, past the huge docks and stores, and about five miles above see the great Albert Bridge, which carries a railway, at a height of one hundred feet, from the hills of Devon over to those of Cornwall on the western shore. It is built on nineteen arches, two broad ones of four hundred and fifty-five feet span each bridging the river, the entire structure being two thousand two hundred and forty feet long. Out in the English Channel, fourteen miles from Plymouth, is its famous beacon—the Eddystone Lighthouse. Here Winstanley perished in the earlier lighthouse that was swept away by the terrible storm of 1703, and here Smeaton built his great lighthouse in 1759, one hundred feet high, which has recently been superseded by the new lighthouse. The Eddystone Rocks consist of twenty-two gneiss reefs extending about six hundred and fifty feet, in front of the entrance to Plymouth Sound. Smeaton's lighthouse, modelled after the trunk of a sturdy oak in Windsor Park, became the model for all subsequent lighthouses. It is as firm to-day as when originally built, but the reef on which it rests has been undermined and shattered by the joint action of the waves and the leverage of the tall stone column, against which the seas strike with prodigious force, causing it to vibrate like the trunk of a tree in a storm. The foundation-stone of the new lighthouse was laid on a reef one hundred and twenty-seven feet south of the old one in 1878. It is built of granite and rises one hundred and thirty-eight feet above the rock, its light being visible seventeen miles: it was first lighted May 18, 1882.