The fact is not generally known, but the information has been purchased at a dear rate, that the purchase of lumber for the foreign market by board-measure, instead of cubic, involves a heavy loss. In European markets all lumber is sold by the cubic foot, so that the cost of sawing is completely thrown away. Black walnut, for example, cannot be laid down in Detroit, or any lake port, under $18 to $20 per M., while the lumber can be obtained for $125 to $150 per M. cubic feet, 1,000 feet cubic measure being equal to 12,000 feet board measure. Thus in purchasing by cubic measure, the buyer pays only $125 to $150 for an amount that by board measure would cost $216 to $240, making a clear difference of ninety dollars upon only one thousand cubic feet, equal to $900 upon a cargo of some of the vessels engaged in the trade last year. The same rule would apply substantially to other kinds of lumber. Independent of this, a decided preference is given to lumber in the log, owing to the good condition in which it can be delivered. There is one more point which manufacturers as well as shippers should bear in mind. The value of much of the lumber sent out was greatly impaired by being attached to the heart, which is the most porous part of the tree, and therefore most liable to crack. To obviate this objection the saw should pass upon each side of the heart, thus leaving the whole of it attached to a single piece of timber, instead of one or more pieces, and thereby making only one cull. By observing this rule a difference will be made in the market of thirty or forty per cent.

Are staves or lumber the more profitable to ship? This depends upon circumstances. Last year it was very dull for both. For staves especially the season could not, for various reasons, have been more unfavorable. In the first place, the grape crop was a very short one, not only in France, but in all the vine countries, including the Canaries. This, of course, greatly lessened the demand for staves, and there were consequently very few taken from England to France, although French vessels are in the habit of taking them for ballast at a merely nominal rate, owing to the difficulty they experience in procuring return freights from England. The short crops in Canada and the great scarcity of money, forced an unusual number of laborers in that country into the stave and lumber business. Under advices that heavy shipments were in prospect, coupled with the general check upon business on account of the war, prices became depressed. Notwithstanding all this, the shipments hence, being early in the market, sold to advantage, and may therefore be considered as a signal success, under the circumstances. The smallest vessel going out from here netted a freight of $3,500.

The most striking feature with regard to Detroit, in a commercial point of view, is her admirable location, which constitutes her the metropolis of a vast region, than which no city off the seaboard can boast one equally grand or important. The region embraces a circuit of some three thousand miles, composed of land and water, which both seem to vie with each other in contributing to the material prosperity of our city, while every interest involved is benefited in some degree by her. In the far north, where the rugged coast of the upper peninsula is lashed by the waters of the monarch of lakes, Detroit enterprise assists in redeeming the hidden treasures of the earth from their state of profitless inertion. There is not a hardy delver in the mines who is not familiar with the skill of Detroit machinists, nor an echo in all the majestic wilds skirting that noble expanse of waters, that has not been awakened by Detroit steamers. Further down upon the limpid waters of Lake Huron, where the army or rather the navy of fishermen set their nets for the capture of the finny tribes, here, too, our city possesses an interest almost as direct as if the canvas of their tiny crafts were spread within sight of her spires, the product comprising one of the most important staples in her multiform commerce. Last, but not least, is the great lumber region with which the prosperity of Michigan is so largely identified. The population of this region, as well as of the others we have referred to, raise almost literally nothing for their own consumption, their respective pursuits being inconsistent with that of tillers of the soil, so that in addition to the usual stores required by farmers, they have to purchase their breadstuffs and similar supplies. The bulk of these are bought of our dealers, this being not only the most convenient, but the cheapest and best market, as is amply proven by experience.

Under the appropriate head will be found a complete and authentic statement of the commerce of the Saut St. Mary Canal, by which it will be seen that the aggregate value of the upward-bound freight is estimated at $5,298,640. The up-freight nearly all carried by steamers, of which the number running the entire season was seven, three from Detroit, one from Chicago, and three from Cleveland. The Detroit boats have generally been loaded to their utmost capacity, while we have the word of the Cleveland captains to the effect that two-thirds of their cargoes are usually taken on at this port. We must therefore be clearly within bounds in claiming that three-fourths of the above amount is part and parcel of the commerce of our city which would show our Lake Superior exports to be $3,960,000. In seasons in which the crops of our Canadian neighbors partially fail—a common occurrence within the past few years, but which we hope may never occur again—they naturally become our customers; and since the partial destruction of the wheat crop in Ohio last summer by frost, there have been considerable shipments of breadstuffs to Cleveland, Toledo, Sandusky, etc., which may very properly be included in the home traffic.

The shipments of flour and grain for the supply of our home trade by lake craft, from the opening of navigation for the year 1859, as appears by the books of our Custom House, are as follows:

Flour.Wheat.Corn.
Port Huron10,8852536,916
Saginaw3,79030
Cleveland6,15528,0571,146
Thunder Bay106
Green Bay175
Northport175
Sandusky705
Huron, O.660
Toledo665616
Lake Superior11,321
Other American ports245
Malden1,28916014,548
Chatham3,6711,736
Wallaceburg705
Goderich 3181,274
Saugeen168
Bayfield 200
Other Canadian ports1,33095749

There were also 7,446 bushels oats to Port Huron, and 588 bushels do. to other ports, beside 3,400 bushels corn, and 11,962 bushels oats which were included in the heavy shipments to Lake Superior. We give the places for which vessels cleared; many of the shipments were for intermediate ports. Besides the flour and grain there were large shipments of pork, butter, lard, meal, etc., etc.

The above were all by water. There were in addition large local shipments to various points on the Great Western, the Detroit and Milwaukee, and other roads, that may with equal propriety be regarded as pertaining to the home trade.

The article of corn is one to secure customers, for in Canada it is not essential there should be short crops there. Large amounts are taken for the supply of the numerous distilleries on that side. A single house in our city has sold the past year 100,000 bushels for that purpose.

During the year commodities have been interchanged by lake craft between Detroit and no fewer than sixty-three lake and river ports, to say nothing of the hundreds of towns and cities on the various railroads that are daily trading with us. We have not included those ports to which the bulk of our surplus produce is forwarded, but only such as come strictly within the scope of our subject. There are few places where trade develops statistics of similar character, or anything approximating thereto, while there are plenty of cities of no inconsiderable pretensions, and even great advantages, that would think themselves made if they possessed one-fourth the commercial facilities we enjoy.