John Graunt, The Economic Writings of Sir William Petty (1899)
“ In the year 1642 many Males went out of London into the Wars then beginning, insomuch as I expected in the succeeding year 1643 to have found the Burials of Females to have exceeded those of Males, but no alteration appeared; forasmuch, as I suppose, Trading continuing the same in London, all those, who lost their Apprentices, had others out of the Country; and if any left their Trades and Shops, that others forthwith succeeded them: for, if employment for hands remain the same, no doubt but the number of them could not long continue in disproportion. ”
