Proofs of the origin of the yellow fever, in Philadelphia & Kensington: in the year 1797, from the domestic exhalation ; and from the foul air of the snow Navigation, from Marseilles : and from that of the ship Huldah, from Hamburgh, in two letters, addressed to the governor of the Commonwealth of Pennsylvania

Proofs of the origin of the yellow fever, in Philadelphia & Kensington: in the year 1797, from the domestic exhalation ; and from the foul air of the snow Navigation, from Marseilles : and from that of the ship Huldah, from Hamburgh, in two letters, addressed to the governor of the Commonwealth of Pennsylvania