. Canadian forest industries 1894-1896. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 14 XJJK CAHADA LUMBERMAN BRITISH COLUMBIA DOUGLAS FIR. CORRESPONDENCE being carried on in the ^ columns of the Timber Trades Journal, of London, Eng., brings out some strong points favorable to the Douglas fir of British Columbia. A writer from Virginia would give a larger meed of praise to the pine of his state, but an answer comes from A. C. McDonald, of Victoria, B. C, pointing out that the largest ship building firms on the Clyde give their preference to the
. Canadian forest industries 1894-1896. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 14 XJJK CAHADA LUMBERMAN BRITISH COLUMBIA DOUGLAS FIR. CORRESPONDENCE being carried on in the ^ columns of the Timber Trades Journal, of London, Eng., brings out some strong points favorable to the Douglas fir of British Columbia. A writer from Virginia would give a larger meed of praise to the pine of his state, but an answer comes from A. C. McDonald, of Victoria, B. C, pointing out that the largest ship building firms on the Clyde give their preference to the "suit- ability of theDouglas fir lumber for ship building pur- ; Strength is given to this communication when it is remembered that the United States Navy at Wil- mington, Del., have used lumber from Burrard Inlet for supply purposes in preference to that from their own country. Considerable quantities of British Columbia timber have also been used by the Montreal Harbor Board in their operations of deepening the canals of the St. Lawrence. W. J. Stevens, another ship builder, confirms all that is said by these others as to the superiority of Douglas fir, where durability is desired. July, 1894 WHY PULLEYS RUN UNSTEADY. /CENTRIFUGAL force has less to do with makine ^ a pulley run unsteady than the mere tendency it has of trying to get where it can rotate about its own centre of gravity. A wheel is generally looked upon as so much weight, and, if held off its centre, must go switch- ing about like a heavy stone in a short arm sling, tend- ing to pull the machinery to pieces. This may be well enough for a start, while the wheel is getting up to speed, but the time soon comes when the wheel will turn to its own centre and let the shaft swing for a while. Just notice how the juggler can seize a dish of any kind, as a dinner plate, for instance, and throw it up with a whirling motion, and while in the air, catch it on the end of a stick and cause it to rotate with ea
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