1. An essay on the climate of the United States: or, an inquiry into the causes of the difference in climate between the eastern side of the continent of North America and Europe ; with practical remarks on the influence of climate on agriculture, and particularly the cultivation of the vine Publication: Philadelphia : Published by Hopkins and Earle ; Fry and Kammerer, printers, 1809 Subject(s): ClimateAgricultureUnited StatesEurope
2. An oration on the causes of the difference, in point of frequency and force, between the endemic diseases of the United States of America, and those of the countries of Europe : delivered, by appointment, to the "Philadelphia Medical Society," on the fifth day of February, 1802 Author(s): Caldwell, Charles, 1772-1853 Publication: Philadelphia : Printed by T. and William Bradford ..., 1802 Subject(s): Disease OutbreaksUnited StatesEurope