Note 7 — BRITAIN’S COAL CELLARS.

I have obtained a somewhat different result from a computation I have just gone through. I make the consumption 291 millions in 1900, and 1,446 millions in 1950. Mr. Lemoran seems to have taken the percentage at 3½ instead of 3¼. It is worth noticing how seriously a small change in the percentage affects the result; the consumption in 1950 becoming 1,760 millions of tons, instead of 1,446 millions.