assable for nia, Oregon and Washington, where are located the can attain a speed of from 8 to 10 miles an hour if wagons. Another great difficulty encountered, espe- desired. It is used, however, in the forests, where principal lumber camps, are in a very crude condition, cially in California, is… … similar to that of ,the farm engine is required than in farming opera- General View of the Freighting Engine. which has already betn described in tions with the tractor. The larger ; types have an engineer and fireman, the SclENTIFIC AMERICAN. The driv- stump lots to the mills or the railroad…
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