LUZERNE, AUGUST 30.--In company with a couple of very agreeable English gentlemen, who had just returned from Italy, we took a boat at Alpnach, and were rowed down the Lake of the Four Cantons to this beautiful place. This lake is one of the largest, and certainly the most picturesque, in Switzerland, being irregular in its shape, indented with little bays, and affording, in its whole extent, every variety of scenery. After doubling several of its promontories, in a sail of two hours, we landed almost on the very steps of the favorite 'Hotel de Cygne' at Luzerne. It is a capital house, close to the water, and as we sit at dinner, we have on one side a fine panoramic view of the Bay of Naples, and, on the other, the _real_ panorama of this beautiful lake and surrounding mountains. We dined sumptuously at the _table d'hôte_, and then walked out to a garden in the suburbs to see a famous piece of sculpture from a model by Thorwaldsen, the Swedish artist. It is a colossal lion, pierced with a barb, cut out on the side of a hill of rock, and under it are inscribed the names of the Swiss guards who fell in the French revolutions of '89 and '30. It is remarkable that Swiss soldiers are yet employed as the body-guards of the kings of France, Naples, etc., as more trustworthy than their own people. These guards are formally 'let out' by the Swiss government; but how such a proceeding is compatible with national honor, I am at a loss to conceive. There are two covered wooden bridges at Luzerne, each fourteen hundred feet long: the interiors are adorned with curious old paintings, of the Dutch school, comprising a regular series of scripture subjects. You will recollect that this is the place from whence the travellers set out in the graphic opening scene of 'Anne of Gierstein.' It is in the vicinity of the scenes of Tell's exploits, of the battle-field of Sempach, and many other interesting spots. The gloomy and 'cloud-capt' brow of Mount Pilatus, where tradition says Pontius Pilate threw himself into the lake! is a conspicuous object on one side; and opposite, is the isolated Mount Rhigi, on the top of which we propose to lodge to-night, as all faithful travellers here do, for the sake of 'the most magnificent sunset and sunrise prospect which the world affords.' * * * * *