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spaced 18 in. amidship and 15 in. from the forward end of the boilers to the:stem. The deck beams, 3 by 4 by 3% in. are car- ried on alternate frames. The plating, .and in fact all the steel used in the boat is mild open- hearth throughout, and -rivets are of the same material. The plat- ing is 34 and 5-16-in. thickness with 60,000 pounds tensile strength and is double riveted and punched according to the latest rules of the American Shipmasters' asso- ciation. There are eight Z-bar keelsons on the bottom of the hull extending from stem to stern be- tween the bulkheads and one Z- bar keelson on each side connected to the side frames by angle-iron clips. At the bottom on each side be- tween the first bulkhead and the side of the boat there is a heavy keelson running from the forward end of the cylinder timbers to the forward end of the boilers, a beam whitch acts as a footlings for the main hog-chain braces to heel on. The keelsons are made of two 12-in. by 15-Ib. channels' with a cap on top Io in. wide by 15° lbs. per sauare foot. The stem is of hammered steel 2% by to in., slotted out to re- ceive the: keel plate. "Ihe boat also has three breast hooks for- ward, running back to the for- ward bulkhead, and the two tran- soms aft have secured upon them four balance rudders. of steel operated by the Johnson steam steering apparatus. The deck of the: boat in the engine room and under the boilers and the. coal bunkers are of 3-16-in.. steel, while the remainder of the deck is composed of 234 by 6-in. se- lected white pine amply caulked with: cotton and oakum. The bits, kavels and chalk are of iron. The engine beams are of steel and are secured to the deck beams and plating of the hull with a heavy knee and a new design of A- frame bracing, doing away with the old style wheel chain bracing. This .hoat has one set..of 'main hog-chains on each side, braces of which are made. of heavy I0-in. tubing with cast iron caps and shoes. One of the hardest. propo- sitions facing steamboat men in shallow waters is the tendency of the boats to hog in the middle, but the longitudinal strength of the S. S. Brown is insured by the system of hog chains which are of ample strength to withstand this tendency of long, shallow river boats: In addition to this "NMOUd 'S "S AHL. JO SANIONA GNNOAWOD OML aHL JO ANO dO-NOILOUS GNV NV1Id TARE Marine. REVIEW ® ACS