DAVY, HUMPHREY.

On some Combinations of Phosphorus and Sulphur, and on some other Subjects of Chemical Inquiry. Read June 18, 1812.

(London, W. Bulmer and Co., 1812). 4to. No wrappers as extracted from "Philosophical Transactions" 1812 - Part II. Pp. 405-415. Faint offsetting to first page, otherwise fine and wide-margined.

First printing of the paper in which Davy demonstrates that Sulphur dioxide contain equal weights of oxygen and sulphur and hydrogen sulphide "one proportion of sulphur and two of hydrogen"

Order-nr.: 45709