Philosophical Essays: on the Following Subjects : I. on the Ascent of Vapours, the Formation of Clouds, Rain and Dew, and on Several Other Phoenomena of Air and Water, Ii. Observations and Conjectures on the Nature of the Aurora Borealis

Philosophical Essays: on the Following Subjects : I. on the Ascent of Vapours, the Formation of Clouds, Rain and Dew, and on Several Other Phoenomena of Air and Water, Ii. Observations and Conjectures on the Nature of the Aurora Borealis