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In ordinary rotative condensing engines of good construction, 10 lbs. of coal per nominal horse power per hour is a common consumption; but such engines exert nearly twice their nominal power, so that the consumption per actual horse power per hour may be taken at from 5 to 6 lbs. Engines working very expansively, however, attain an economy much superior to this.

C. Scherzer, in his work on Central America, gives the cacao-tree an existence of twenty years, and says that each tree annually produces from 15 to 20 ounces of cacao. 1,000 plants will produce 1,250 lbs. of cacao, worth $250; so that the annual produce of a single tree is worth a quarter of a dollar. Mitscherlich says that from 4 to 6 lbs. of raw beans is an average produce.

He was in very high condition, and produced nearly 400 lbs. of fat; his skin weighed upwards of 100 lbs., and the entire carcase of the animal cannot have been less than 1600 lbs." This weight is equivalent to a large-sized English cart-horse. I have seen one of the skins procured by Mr. Lamont, and I can readily appreciate his account of the weight.

In reply to inquiries as to necessary outfit for camping and woods-travelling, the author furnishes the following lists: Provisions per man, one week. This will last much longer if you get game and fish. Pack one, or absolute necessities for hard trip. Wear hat; suit woollen underwear; shirt; trousers; socks; silk handkerchief; cotton handkerchief; moccasins. Whole pack under 50 lbs.

The inlet and exhaust valves were of the overhead type, as may be gathered from the diagram, and in spite of cast-iron cylinders being employed a light design was obtained, the total weight with radiator, piping, and water being only 5.5 lbs. per horse-power.

Take of loaf or crushed sugar 8 lbs., pure water 1 gall., gum arabic 1 oz., mix in a brass or copper kettle, boil until the gum is dissolved, then skim and strain through white flannel, after which add tartaric acid 5-1/2 oz., dissolved in hot water. To flavour use extract of lemon, orange, rose, sarsaparilla, strawberry, &c., 1/2 oz., or to your taste.

The speed of this vessel, in one of the experiments made with her, was 8.445 knots; the number of revolutions of the screw per minute, 231.32; and the pressure on each square foot of area of the screw's disc, 214 lbs.

I gave the minstrel a considerable present of beads, and he went away rejoicing, singing and twanging his instrument to the discomfiture of all our enemies. It was fortunate that I had been able to carry so much as 300 lbs. of beads. The soldiers could now purchase fish and potatoes.

In the valleys the line was laid originally with steel rails of 50 lbs. weight, and 3,080 ties to the mile, in the mountains with 60 lbs. rails, but no renewals are made with less than a 60 lbs. rail. From Rocklin to Newcastle the vineyards and orchards are very numerous, and again at Colfax, at which latter place we got some very fine grapes grown at an elevation of 2,400 feet above the sea.

M'Arthur for the possession of an exportable commodity which has contributed very materially to its present wealth and importance. Such general attention is now paid to this interesting branch of rural economy, that the importation of wool into England from our Australian colonies, amounted, in 1832, to 10,633 bales, or 2,500,000 lbs.