导论 Atural and polia OBSERVATIONS Mentioned in a following INDEX and made upon the Bills of Mortalit fOH GRAUT Citi LONDON With reference to the Governmen Religion, Trade, Growth, dyre, Difeafcr, and the feveral Changes of the faid CIT Nou, me tireur Turba, laboro Content panm Lcaoribus LONDON for fabn and The Dica, at the Sigo of the Bell in St. Pauls rch- yard MdCLxIl导论