Ornament Details
062560080000120_0
tailpiece
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.
printed by W. Bowyer and J. Nichols
12
554
362
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