And if the 9th notch of the sector admits, 35 per cent,
And if the 10th notch of the sector admits, 30 per cent.
We should work the engine as follows:—
From 0 to 10 miles, use the 10th notch,
From 10 to 20 miles, use the 8th notch,
From 20 to 30 miles, use the 5th notch,
From 30 to 40 miles, use the 2d notch,
APPLICATION OF LOCOMOTIVE ENGINES TO RAILROADS.
364. Department 1. Freight.