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TRANSPORTATION ON LAND BY VEH1CLES:~THE VEHICLES 



California traction engine at work. Best Mfg. Co., San Leandro, Cal. 



II. Traction engines for log waggons are used in the United States on a small scale, since stone 

 roads seem to be prerequisites. Loose sand, deep mud, or swamp are impracticable for traction engines. 



In Pennsylvania and in North Carolina, four-wheelers costing -v 1,500 for 16-horse-power com- 

 pound engines, able to take 12 per cent grades and to turn 30-foot curves, have proven failures. 

 The use of traction engines plows the roads during rain. 



In the California mountains, where drought prevails during 6 months of the year, the three-wheelers 

 (price >■ 5,500) manufactured by the Best Co., of San Leandro, Cal., have been largely and success- 

 fully introduced. High wheels (diameter, 8 feet) and broad tread cause little injury to the route travelled. 



Three -wheel traction engine. Best Mfg. Co., San Leandro, Cal. 



