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THE MARINE RECORD. 7 The sinoke flue runs along the front end of the boilers, where connection is made with the uptakes, and is carried to and through the party wall of the dynamo- room, when it is led downward and under the floor to the chimney. <A boiler of the drop flue type, 9 feet high and 4 feet in diameter, with 250 14-inch by 18-inch flues, ith circulating tubes, is placed in a corner of the boiler- " room, and supplies steam to the auxiliary engines, which can also take steam fromthe main boilers. A traveling crane to lift three tons has been placed in the engine- room, and with it any part of the engines or pumps can be handled for repairs. The dock is closed by a caisson, built of steel, which may be described as an irregular rectangular box with parallel sides and inclined'ends, measuring 57 feet in length on the inner face, and 59 feet on the outer; 11 feet 10 inches in width, and 21 feet 6 inches in height. Two keels, 4 by 8 inches dimensions, run the whole length of the bottom, on the outer edges of which are inserted at regular intervals 4 by 4} inches shear steel bars, properly bent, their places in the keels being truly planed to the required curvature. The keels rest on the rollers in the caisson berth and chamber, and the curved bars, which project somewhat beyond the sides of the . keels, are for the purpose of preserving the parallelism of the caisson while being moved. ‘The lower 3 feet is of cellular construction for strength and stiffness, and composed of $-inch plates and 3x3x2 inch angles. All angles for the sides and ends are 3x3x} inch, and for the reverse bars 3x3x3 inch. The cross-beams up to the lower dock are 4x4x} inch angles, and above 34x34x} inch. Under the lower and upper floors, Z beams 5x31;x23x1¢ inch wereused. The upright posts are 6x3x3 inch channels, and the diagonal braces 4x3x}i inch angles.. The platesin the bottom and first row on the sides and ends are 4 inch in thickness, and those above diminish to}inch in the top plate, which is finished with a 9x3 inch bulb. The floor plates are 4 inch in thickness. All outside plates were planed on their edges, and lapped 2} inches in the work and were single riveted. Where required, filling pieces were placed be- tween the plates and the frames, to make up for the difference in the thickness of the plates, and voids be- tween the plates and the frames. For the movement of the caisson a hauling bar 13 feet 4 inches in length is connected by means of a 4-inch pin, the outer end pro- jecting 7 feet 9 inches, and carrying a yoke 17 feet 8 inches in length, attached by a 4-inch pin, the outer ends being supported by two hinged brackets coupled with parallel motion bars. For ballasting purposes two 6-inch sluice valves are placed in the outer face above the line of the floor, to which are attached 6-inch cast iron pipes leading to within 4} feet of the bottom. At the bottom of the inside face a 4-inch valve is placed caisson can also be emptied by a No.5 pulsometer. The cellular bottom is filled with concrete, and the further permanent ballast is supplied by the requisite amount of stone. On the outer faces are riveted 6x6x} inch angles, which carry the white oak meeting faces, which are secured in place by 3 inchbolts. ‘The caisson weighs 255,000 lbs., and when the lake is at zero its displace- ment is 358 net tons. It is moved into and out of place by wire ropes, which pass over traversing grooved wheels secured to the masonry at the dock end of the chamber, and over spirally grooved drums keyed on a horizontal shaft at the head, which is actuated by the auxiliary engines. The dock at zero contains 2,100,000 gallons of water when unoccupied by a vessel, and can then be emptied in 75 minutes, the pumps and engines making 175 revo- lutions per minute, each pump thus throwing 14,000 gal- lons per minute. Through the filling culvert the dock can be filled in 55 minutes. A large portion of the dock property as it stands to-day is made ground, the area be- ing enclosed by crib-wharfing of the usual type, and filled with the materials excavated in grading the site, and from the dock pit. it The cost of the dock may be placed as follows ; Land....., 5» sia Gabi des «Ete» Ensdpuep oxshil- she) hiss eaedeedds ot cstosscnton: 20,000 WGC POPE isccen, conse censryanescatcsecesecerecestvassearccecs 365,000 Pumps, Heinle; Cte: os. 0.6: vecosescconperyeconsa ces 26,000 Engine house...... pdvesscousinqeress esote sia see se 26,000 Caisson ....ec sess. lidebddees cebevetneesdiasiesdevee iisseevedseces 18,000 Engineering and contingencies.........00cescceeseceees 42,000 PAL Scat ce covseveceesuas ic csu bias eiata coca, Uh TOT OOO 0 a 0 BOILER MAKERS AND SHIP BUILDERS. The Brotherhood of Boiler Makers and Iron Ship Builders’ held its convention in South Chicago last week. An important part of the work was the institu- tion of a district council to govern work on the Great Lakes. This will include the local unions at Chicago, South Chicago, Cleveland, Detroit, Wyandotte, Bay City, Port Huron, West Superior, Duluth, Buffalo, Erie, Toledo, Milwaukee and Racine. ‘The district council will have charge of regulating and equalizing the wage scales in the Various places represented, the hours of labor, etc. ‘The following district officers were chosen as follows: President, H. Ll. Molach, Wyandotte; first vice-president, M. W. Gibson, Buffalo; second vice- president, W. J. Holden, West Superior; third vice- president, J. Giltoyle, South Chicago; secretary-treas- urer, Louis Hall, Cleveland. The district council is affiliated with the International Boiler Makers’ Union. ei 5 aes aime The Diamond Match Co., Ontonagon, Mich., will re- build their recently burned plant; $150,000 will be ex- pended on new lumber and match manufacturing machines. SAULT CANAL TRAFFIC FOR AUGUST. In spite of all that has been said regarding the greatly reduced shipments of many of the principal components of lake freight, all east-bound shipments show increases over last year for the season up to date with the excep- tion of flour, building stone, and lumber, the decrease in all three of these items being very light. In west- bound freight the only decreases shown are in flour, wheat and salt, the shipment of the first two westward last year being increased on account of some cargoes sent up for special purposes. A glance at the table below will show that the amount of freight moved dur- ing August was only slightly in excess of that moved during August 1895, the slight increase in east-bound shipments being partially offset by a falling off in those west-bound. For the season up to Sept, 1, however, there is shown an increase of nearly 2,000,000 tons in all classes of freight moved, and an increase of over 6,500 in the number of passengers carried. Ore shipments for August were 1,209,709 gross tons, as compared with 1,315,725 in August, 1895, a decrease of 106,016 long tons. This is more than balanced, how- ever, by the gains in previous months, and up t@ Sept, 1, 1896, there had been carried 5,201,875 tons, as com- pared with 4,896,564 tons for the same period last year, an increase of 305,311 tons. When tothis total is added the shipments from Escanaba and Gladstone, the total of ore shipments for the season is found to be between 6,900,000 and 7,000,000 tons. It is very doubtful, however, if there is another million and a half brought down dur- ing the closing months of the season, as all the contracts have nearly expired and forces at the mines are being steadily reduced. : The total of down shipments this season is greatly augmented by the immense amount of wheat brought down, 32,732,420 bushels, as compared with 11,655,128 bushels up to Sept. 1, 1895. The large apparent increase in the shipments of ‘‘grain other than wheat’’ is to some extent misleading, as the data for 1895 refers to corn -only, shipments of flax, rye, barley, etc., being included in the unclassified freight. The shipments of these grains are, however, phenomenally iarge, and demon- strate how rapidly the Northwest is developing. c The falling off in lumber shipments is a direct result of the financial stringency, as there have been large quantities at the head of the lakes, all ready to go for- ward, had it been sold. The falling off is about 50,000,- 000 feet. ‘While coal shipments to Lake Superior ports show an increase of over half a million tons as compared with last year, there is nothing to be argued from this, save that dealers have had unusual advantages in shipping during the middle of the season; and itis very possible - that the total for the season will fall below the aggre- gate of last season. Miscellaneous freight shipped westward shows an increase, in spite of the reported lighter purchases. FOR THE MONTH OF AUGUST, 1896, INCLUDING STATISTICS OF THE UNITED STATES AND CANADIAN CANALS AT SAUL/T STE. MARIE, MICHIGAN, AND ONTARIO. EAST BOUND. ITEMS. = Copper, net tons Grain, other than wheat, bushels Binldingrstone, net tonss: cei.) ees O. ae Ee FH lourmepaerelen. tives discs hp inlay dra cect Ae. ca Bae Tron ore, net tons... ........s0 ees gi aearats ‘at Sate nteeiec’ siepeeisus a. MYON, Pls, Met CONS cee ce sie diesels Sas miele sip Bites ae eresed Lumber, M. ft. B. M Miler Ore et TOUS... o..oy cc «see eels ee Slots It loses. Wheat, bushels Wuclassified:freieht,-mettons.. 2) ahi te fe A Tes Passengers WEST BOUND. @oalihard); net Tons. 650.5 VIE i ear ee, Gaals(soit); MEbtONS ei aiid: sae eu e Sallie, . MIGUL, .DALTCIS , Sis. osemeey > Sr ae ierahe f taerery NE eee a MEA SCI Steel. oe crc giels otiode o gnie pats @ gunn sine So ope oieeser es Manufactured iron, net tons Salt barrels: G4. ee ea Tee eee Unclassified freight, net-tons. occ. .evi. ween vee etek Passengers East bound freight, net tons West bound freight, net tons eae a ee ee ec eer ere ee ee ee rer rer er Yr ee wovleveeerelelele se we Ss Swe CC oe ee eee ee Ce te te ee Pree ee ee ee ree er a ee Sette ee weer sere sees reese eseses See eeeservsnee Pee eee ee eee eee e se ee ene wee ee se rep ewer ares See e ee sereeseeeores oe eewesn August, 1896. August, 1895. Total to September 1, 1896, U.S. |Canadian U. S. |Canadian U.S. |Canadian To Sept.1, Canal. Canal. Total. Canal. Canal. Total. Canal. Canal. Total. 1895. sigipee ste 2 15,066 914 15,980 14,778 14,778 68,135 8,375 76,510 68,770 ela basta 2,159,592 | 1,149,532 | 3,309,124 14,000 14,000 || 9,244,121 | 3,788,716 |13,032,837 16,859 Deelah ch oe Sote |e 3,578 1,300 1,300 11,693 1,140 12,833 13,820 rant Gira Oe 1,063,306 217,276 | 1,280,582 |/ 1,135,785 | Not open| 1,135,785 || 3,348,458 972,906 | 4,321,364 4,676,592 ala ee 1,065.955 288,919 | 1,354,874 || 1,473,612 to 1,473,612 || 3,789,862 | 2,036,238 | 5,826,100 || 5,484,152 garnet eel 1,531 2,220 3,751 3,772 | naviga- 3,772 9,389 8,035 17,424 15,809 es wee 98,231 3,145 101,376 138,152 tion. 138,152 428,878 17,145 446,023 495,332 Secs aedeliis TAO Ae acess AO camer Rite tase Te T4041, So sets cad 140: Ihe st Bak hs Bs hatha 5,060,272 | 1,734,922 | 6,795,184 || 2,695,137 2,695,137 |/21,465,087 |11,267,333 |32,732,420 || 11,655,128 SIR 27,137 2,402 29,539 25,745 25,745 99,486 26,310 125,796 99,354 cna ihe week 4,668 2,062 6,730 5,167 5,167 10,152 5,520 15,672 12,248 Seer wee 33,637 14,950 48,587 52,745 52,745 153,769 71,119 224,888 196,638 rar ee eS 286,821 138,454 425,275 400,846 400,846 |] 1,119,441 607,630 | 1,727,701 1,063,476 eh at wecabed Vids des. 46 LENG. nese 3 2,000 | Not open 2,000, oS ah, ieee 62 2,150 RO Benen eae al eewran eteee ry era ees SIE ree eae 3,000 to 3,000 pe 0 Pl ere eget 1,109 31,650 eae PIES 10,647 114 10,761 14,585 | naviga- 14,585 51,705 3,453 55,158 45,902 Det eae 16,230 1,175 17,405 30,205 tion. 30,205 123,801 6,711 130,512 157,720 SENSE 36,324 10,506 46,830 41,800 41,800 151,365 42,331 193,696 167,150 eT Be 4,002 3,126 7,128 5,787 5,797 8,638 7,594 16,232 13,119 eit et hearste s: serarstsrece me eck DOTS oer ie. sae ee foe es cae M594 es 2OF [lat-canwecpel a eye rest OO SO 7,335,299 Path Gray rh eee ec seen ariel (Aci ear rn DSSIOTS AS POE a bee. cool B89, 5028 a See ete oe cc sep e07 000 1,522,849 Re ca EN baittasice ceo abhi ako hapee PeOlSsSaouchhie = sieiaie » sc0if | vie.e «0 21d oem | Se 4Olig@ GO Il aie vosiae nel sees ois ote og {LO, (Oph AON G,S0Bg148 Nore.—United States craft passing in August, 2,103; Canadian craft, 748; total craft, 2,851; United States craft, registered tonnage, 2,082,742; Canadian craft, regis” tered: tonnage, 579,761; total registered tonnage, 2,662,503