I. An account of the strata in coal-mines, &c
John Strachey · Philosophical Transactions of the Royal Society of London · 1725
Abstract It was some Time since, that in a Letter to one of the Members of this Society, I gave an Account of the several Strata of Earths and Minerals, found in some of the Coal-Works in Somer set shire, which was printed in Phil. Transactions, No. 360.