On a level 1230 gross tons. " 20 ft. grade 585 " " " 40 " 380 " " " 60 " 280 " " " 80 " 215 " " " 100 " 175 " " [Illustration: Locomotive.] DIVISION VI. TANK SWITCHING ENGINES. CLASS 11-1/2 C. General Design Illustrated by Print on Page 114. CYLINDERS. Diameter of cylinders 11 inches. Length of stroke 16 " DRIVING-WHEELS. Diameter of drivers 36 inches. TRUCK. TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR. Diameter of wheels 24 inches. WHEEL-BASE. Total wheel-base 11 ft. 3 inches. Rigid " 4 ft. 8 inches. TANK. Capacity 400 gallons. WEIGHT OF ENGINE IN WORKING ORDER. On drivers 35,000 pounds. On truck 5,000 " ------ Total weight of engine, about 40,000 " LOAD. IN ADDITION TO WEIGHT OF ENGINE. On a level 785 gross tons. " 20 ft. grade 370 " " " 40 " 240 " " " 60 " 175 " " " 80 " 135 " " " 100 " 110 " " DIVISION VI. TANK SWITCHING ENGINES. CLASS 14-1/2 C. General Design Illustrated by Print on Page 114. CYLINDERS. Diameter of cylinders 14 inches. Length of stroke 22 " DRIVING-WHEELS. Diameter of drivers 48 inches. TRUCK. TWO-WHEELED, WITH SWING BOLSTER AND RADIUS-BAR. Diameter of wheels 24 inches. WHEEL-BASE. Total wheel-base 13 ft. 8-1/2 inches. Rigid " 6 ft. 6 inches. TANK. Capacity 600 gallons. WEIGHT OF ENGINE IN WORKING ORDER. On drivers 44,000 pounds. On truck 6,000 " ------ Total weight of engine, about 50,000 " LOAD. IN ADDITION TO WEIGHT OF ENGINE.