8
PART I.
I WILL first refer to the subject of smoke. There is daily sent into the air of Leeds about 20 tons of soot, of which half-a-ton falls, and of that half-ton, 20 to 25 pounds sticks, i.e., is not removable by rain.
A Leeds Boiler Chimney.
I have estimated that, in Leeds, 4,000 tons of coal on the average are consumed every working day of the year. I don’t know what the ratio of house consumption is to factory consumption; but the amount of soot given off from factory chimneys is, at the lowest estimate, ½ to ¾ per cent. of the
