. La revue ferroviaire et technique . avec six conducteurs couplés et notre-roue camion, conçu pour le MediterraneanRailroad italien par Commendatore Frescot, ingénieur en chef de Motive Power de cette route. Il a été spécialement conçu pour la circulation des trains de voyageurs et de fret rapide sur la ligne Companys entre Gênes et Alessandria, qui a quelques nuances lourdes sur la section traversant les APPE-nines. Les trains de voyageurs sont nécessaires pour transformer une vitesse de 50 km, ou environ 31 miles, une heure, sur cette sec-tion, qui comprend une pente d'environ 14 miles de long de 91ft. Au mile, avec plusieurs

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. The railroad and engineering journal . with six drivers coupled and afour-wheel truck, designed for the Italian MediterraneanRailroad by Commendatore Frescot, Chief Engineer ofMotive Power of that road. It was specially intended forworking the through passenger and fast freight trains onthe Companys line between Genoa and Alessandria, whichhas some heavy grades on the section crossing the Appe-nines. The through passenger trains are required to makea speed of 50 km., or about 31 miles, an hour, on this sec-tion, which includes one grade about 14 miles long of 91ft. to the mile, with several curves of 984 ft. radius. Thefirst engine of this type was built at the Companys shopsat Turin, and proved so successful that 40 more have beenbuilt with but slight modifications from the original loco-motive. The boilers of these engines are 60 in, in diameter ofbarrel and 18 ft. 6 in. in length over all. They have 203tubes 2y, ^ in. in diameter and 15 ft. long. The fire-box is7 ft. 8 in. in length and 3 ft. 3 in. in width. It is on the. TEN-WHEEL LOCOMOTiVE, MEDITERRANEAN RAILROAD ITALY. line, tomeet, however, with disappointment, owing to thedesertion of his negro workmen upon nearing the interior, through fear ot the Indian tribes. C^ Nevertheless, the enthusiastic Bourdiol felt competent tomake estimates for a canal, and did so, designing a canal31 miles in length to overpass an elevation of 144 ft., andto be furnished with 22 locks, u on each side. The costof this visionary canal was to be if34, ooo, ooo.T Mr. Gisborne subsequently made a more careful ex-ploration of this route, which resulted in the determinationofthe lowest divide with an elevation of 930 ft. ! NOTE BY THE AUTHOR. In the compilation of this article and of those which willfollow it. I have been allowed by the Navy Department touse all data connected with the subject. I have taken the liberty of reproducing much of the in-formation contained in the report of Lieutenant J. T. Sul-livan, U.S.N., prepared by dir

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