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206 layed 18 hours and 56 minutes by pass- ing boats temporarily preventing the closing of bridge. The aggregate time the railway swing bridge was swung across the canal amounted to 909 hours and 8 minutes, during which time 3,256 engines, 4.751 passenger cars and 26,143 freight cars crossed the bridge. THE Marine REVIEW of freight actually carried through the Detroit river, the government engineers have succeeded in approximating it by calculating the proportion of freight tonnage to registered tonnage. Both the registered and freight tonnage of the Sault Ste. Marie canals are known, and as the vessels which traverse the Detroit COMPARATIVE STATEMENT OF COMMERCE THROUGH THE CANALS AT SAULT STE. MARIE, MICHIGAN, AND ONTARIO, FOR THE SEASONS OF 1908 AND 1909. Traffic for 1909 Total traffic for United States Canadian Season Season ITEMS Canal. Canal. 1909. 1908. ' Vessel Passages-- : ¢ Srcaers ee gh ests Sood in Number..... 10,356 6,107 16,463 12,553 Saline ee as ae as oe Number..... 1,668 119 1,787 1,355 Vmreeistetede st... ann. ur Number.. 779 175 954 1,273 Te Seer Number..... 12,803 6,401 19,204 15,181 TEOCKAG OS) SG agains a eas oes Number 8,607 4,964 1571 10,685 Tonnage-- Retiered Wee eile. ae iene awe: INGt sca 28,939,463 17,812,254 46,751,717 31,091,730 TCWG OE rel ety cs paces Nett. cv. © 801 82.374 27-762, 775) 3 75809,149 41,390,597 ASSEN CTS AG ie eek hee eke ae Number..... 27,736 32,212 59,948 53,287 Coal-- WAGGA ah che ec eee ean tas Net tons 1,060,753 351,634 1,412,387 1,384,743 OL iii dar ere ee a te Net tons 6,150,540 2,377,099 8,527,639 8,517,717 MOUTH, ase nd eour wae Osan ce eee Barrels... .:.. 4,580,833 2,913,342 7,094,175 5,704,375 WHEEG ei ere eka we Bushels..... 38,438,716 74,814,845 113,253,561 106,041,873 Grain, sother' than whedti.. 33. .... Bushels..... 17,990,396 28,529,055 46,519,451 43,458,583 Manufactured and pig iron......... Net tons.... 363,459 158,822 522,281 289,308 Bale ee we pee eee Barrels i. 3. 449,977 201,114 651,091 547,223 COPPEr esses Oe ers Peis 6 Net tons 118,889 8,323 127 212 101,735 WON Ole oo eis eee ceca as Net tons.... 18,866,499 21,148,479 40,014,978 24,650,340 deumber es oe benassi M. ft. B. M. 517,694 34,686 552,380 453,761 TIMOR Oreos sac yiokasely sds ies ea we IN GEULOMS i er ce a Che en eas eh eee aie wl saints ae oe Putian: StLONE 2 ne eee nighties Net tons.... VS 84e a Gas 1,784 1,019. General: merchandise 0.5.08 .i Net tons.... 595,564 544,780 1,140,344 842,901 TABLE SHOWING TOTAL FREIGHT, ITS VALUATION, FREIGHT CHARGES, AVERAGE HAUL OR DISTANCE FREIGHT WAS CARRIED, AND RATE PER TON PER MILE. Freight Charges, Total Valuation per Value of Value of Freight, of Freight Average Mile- American Canadian Year. Net Tons. Freight. Charges. Haul. Ton. Craft. Gratt. TSBT eee oes 5,494,649 $ 79,031,757 $10,075,153 811.4 2.3 $ 17,684,550 $ 2,089,400 NR ecb ial os after ok aioe 6,411,423 82,156,019 7,883,077 806.4 1.5 20,381,100 1,514,300 VERO Bair ies 7,516,022 835732527. 8,634,246 790.4 1.5 25,328,600 1,597,600 ROO Sei oa) 9,041,213 102,214,948 DAT 221d: «F972. 11,3 27,857,700 1,777,800 POON a ek 8,888,759 128,178,208 9,849,022 820.4 1.35 31,947,300 2,119,500- TRO ea 1214 883) 2135, 117, 207° 12,072,850.: 8224) 51231 36,220,100 2,108,700 MEG) ae alae. 10,796,572 145,436,957 95957,483: 831.9) 1.4 39,017,400 2,115,700 TOA 13,195,860 143,114,502 10,798,310 821.1 0.99 41,124,200 1,959,800 EE woo vee 15,062,580 159,575,129 14,238,758 830.0 1.14 40,858,800 2,037,000 TBIO eae ok 16,239,061 .195,146,842 13,511,615 836.4 0.99 43,006,200 2,135,300 1897) ee 18,982,755 218,235,927. 13,220,099 841.3 0.83 42,375,700 2,001,400 1898 cs oe ee oo 21,234,664 233,069,740 14,125,896 842.6 0.79 45,199,800 2,491,900 PEOOe OMe ee ea! 20,299,010. 281,364,750... 21,959;707. 827.2... 1.05 65,000,520 3,369,600 1900)... Lee oe 25,643,073 267,041,959 24,953,314 825.9 1.18 66,116,583 3,618,576 MOOT oo ee, 28,403,065 289,906,865 23,217,974 823.3 0.99 57,244,200 3,311,900 O02 ee ame 35,961,146 358,306,300 26,566,189 827.4 0.89 67,205,000 3,792,400 1003 a a 34,674,437 349,405,014 26,727,735 835.6 0.92 68,252,800 6,384,500 1904 oa aa 31,546,106 334,502,686 21,552,894 843.5 0.81 63,789,300 5,377,100 TOOR A cies As dee se 44,270,680 416,965,484 31,420,585 833.3 ° 0.85 73,211,300 5,429,000 O06 ese Se anc cas 51,751,080 537,463,454 36,666,889. 842.4 0.84: 88,392,000 6,140,500 WOOF ec 58,217,214 569,830,188 38,457,345 828.3 0.80 102,525,500 7,918,000 ONO ee as 41,390,557 470,141,318 23,903,244 842.0 0.69 101,643,000 10,054,000 TOO or 97,895,149 626,104,173 36,291,948 809.0 0.78 116,192,000 10,707,000 TRANSPORTATION CHARGES, INCLUDING LOADING AND UNLOADING, ON FREIGHT PASSING THROUGH CANALS AT SAULT STE. MARIE, MICHIGAN, AND ONTARIO, FOR THE SEASON OF 1909. ARTICLES, Quantity. Rate per Unit. Amount. OE ee ee eo... Net tons... on 9,940,026 $0.31 3,081,408.06 ee Barrels... ss... 00 7,094,175 23 eae CAG Gees re cals is BUSHES tin rc ns 113,253,561 02 2,265,071.22 Grain, other than wheat.......:. BUSHES 0c, 46,519,451 .02 "930,389 02 Manufactured iron ............. Wel tons, 481,627 1.80 866,928.60 PAB APO ee oe ee ck Net tons oto... 40,654 1.50 60,981.00 A or ee ede ee. Barrels fsa ne ee 651,091 a5 - 97,663.65 CRORCl 361 56h Oke: Net tons :40 sia, 127, 242 1.10 139,933.20 . Ree a ie ee ee a ae rage 'a Mapua eee 40,014,978 750 23,608,837.02 a ae as adty Bi Ao a 552,380 : : ne OPO cites a ac eisai reiki a Net tonss 330 a Paeen ne ooo Mie Stone oa sds a Net tons. tone 1,784 150 ENT 9 ere oc General merchandise ........... Net ions. foc 1,140,344 2.00 2 Decca co Ota ee cl a, ee a ee Appended to this report is a calcula- tion of the commerce passing through the Detroit river. While there is no means of obtaining the actual statistics $36,291,948.02 COCO Mr wee? whee Se6 ele 6, A river are the same ones that pass through St. Mary's Falls canal, it is comparatively simple to approximate freight tonnage of the Detroit river. The - books." May, 1919 report of the Detroit river traffic is as follows: The number and class of vessels and the number of vessel passages have been taken from the custom house records at Detroit, Windsor and Amherstburg; and from the marine post office records at Detroit. The registered tonnage is taken from the American and Canadian "blue The postmaster at Detroit has permitted the records of vessels passing Detroit to be copied from the marine post office books. The records of those stopping at Detroit were obtained from the Collectors of Customs at Detroit, Windsor and Amherstburg. The -vessel passages and _ registered tonnage by months are as follows: Number of Registered Month. Vessels. Tonnage, AMMAR ok ae le ae Cee i .) 6,506 Mebritany soars ae es. 7 6,202 IVP GH 8 es ee er ae. 136 27,815 Aprils te See ie ee eae 1215 955,309 WEA esate ot vs tee eo weisins 3,265 4,671,345 JARO Cree oases tute Giese ale 4,164 6,728,197 Th Gece, oe ak 4,994 8,072,237 AMPUSE Cee ati ee ee 4,774° 8,361,654 'September sore erie... 4,599 8,319,031 OCOD eR ieee ci ewes 4,340 8,477,227 INOVEMIDER fb iin28 68 2 es 3,666 7,223,764 December 05 ss ee 1,077 1,819,559 - EOLA ea tae. hc een he 32,296 54,668,846 The number of vessels using Detroit river during 1909 was as follows: Number: of American vessels............ 1,140 Number of Canadian vessels............ 172 Number of steam vessels................ 958 Wuniber "ot sail) vessels foi... cae ce 354 Total onumiber Ot vessels 2203 0s Se 15312 It is found from the custom house rec- ords that 3,946,964 net registered tons that used the Detroit river did not go through the. St. Clair: Flats canal; but either stopped at Detroit or turned around and went back down the river. The com- merce of the canal is, therefore, less than that of the river by this amount; making this subtraction, the net regist- ered tons. passing 'St. Clair Flats 'canal is found to be 50,721,882 tons. In addition to the preceding results, there are a number of quantities that from the nature of the data can be very closely estimated. For example, the actual freight, in tons, that is carried through the Detroit river can be closely estimated by comparison with the ton- nage of St. Mary's Falls canal, where records of both net registered and actual freight are kept. During the season of 1909 the actual freight passing. St. Mary's Flats canal was 24 per cent great- er than the net registered tonnage. Since about three-fourths of the Detroit river tonnage is St. Mary's Falls canal ton- nage, there is no error in assuming that the ratio for these three-fourths is the same for Detroit river as for St. Mary's Falls canal. The remaining fourth is mostly traffic to and from Lake Mich- igan ports. An inspection shows that there is approximately the same propot- tional number of loaded and light ves- 4 4 oy i aa le aaa od