Directions for making the best composition for the metals of reflecting telescopes. Together with a description of the process for grinding, polishing, and giving the great speculum the true parabolic curve. By Mr. John Mudge. Read at the Royal Society, Feb 27. March 6. an 13. 1777

People / Organizations
Imprint
London : printed by W. Bowyer and J. Nichols, MDCCLXXVII. [1777]
Publication year
1777
ESTC No.
T130491
Grub Street ID
179591
Description
56p.,plate ; 4°.