Note 21 — SECTION 17. METALLIC ALLOYS.
Reading edition
This author obtained the Royal Society’s gold medal for his essay on the composition, &c. of specula for telescopes. Philos. Transact. 1787.
Reading edition
This author obtained the Royal Society’s gold medal for his essay on the composition, &c. of specula for telescopes. Philos. Transact. 1787.