Recent yacht-building in America offers some interesting data. Mr. Edward Burgess, a very successful designer, planned a keel boat, 'Gossoon,' which was a great success in 1890, and many was the close tussle between her and Fife of Fairlie's 'Minerva,' built in 1888. After the death of Edward Burgess, 'Nat' Herreshoff produced a keel boat, 'the Gloriana,' with new ideas of form and bow, and she acquitted herself well (1891). In 1892 he followed on with the 'Wasp,' keel boat, and in 1893 two cup defenders were designed and built by Messrs. Herreshoffs of Rhode Island, the 'Vigilant,' centreboard, and 'Colonia,' keel boat. The 'Vigilant' was victorious in the best races, and afterwards won the race for the America Cup; nevertheless 'Colonia,' the keel boat, was the designer's favourite. The battle of centreboard _v._ keel will doubtless be continued. Among the cup defenders, General Paine, one of the most scientific and earnest yachtsmen in America, decided to throw aside all conventionality, and to have advanced science carried out in a real racing machine 'up to date.' Full details are not obtainable, but they are understood to be: Canoe hull, canoe bow, hull drawing 5 feet. Fin keel of 12 feet with bulb, through both of which drops centreboard; a small centreboard forward like Commodore Stevens's 'Black Maria' sloop, and the rudder slung on a small fin. It is a matter of general regret that the gear of the boat gave way during the trials. The aluminium blocks were not strong enough, and the jaws of the gaff were carried away. General Paine may, however, be expected to try again. The general feeling on this side among the very best authorities on the subject is certainly that a keel racing cutter can be designed and built to compete with any centreboard vessel, and the victory of 'Vigilant' in the late races has not yet convinced that excellent sportsman and practical yachtsman the owner of 'Valkyrie' that nothing but a centreboard can win the America Cup. One thing must be remembered: it is neither centreboard nor keel _per se_ that makes a perfect racer; it is the happy combination and balance of quantities that get the much-coveted 'gun' at the finish. It is curious that in the very early days of sliding keels a patent for a design should have been taken out, not by a practical sailor or naval architect, but by a London coach-builder. In 1785, Lionel Luken, who followed that trade, wrote a pamphlet upon the 'invention, principle, and construction of insubmergible boats'; such boats were to be protected by bands of cork round the gunwales, to be made buoyant by using air compartments, especially at bow and stern, and 'to be ballasted with or by an iron keel.' Apparently after much trouble Luken found an opportunity of testing his idea, and the first iron-keel boat at Bamborough Head saved lives from shipwreck. [Illustration: H.M. 'Trial', cutter--sheer draught. Designed by Captain Schanks, 1791.]