Rare Boow Derr.
*XE .110 .66
no.l
DUNN, SAMUEL.
Naylor, Samuel.
Dunn's linear tables described and their utility verified: with precepts and examples, for shortening calculations and preserving ac- curacy in the lunar method of finding longitude at sea. First introduced into the United States in 1798, by Samuel Naylor, and by him recommended ... as the most simple and easy method of clear-= ing lunar distances of the effects of refraction and parallax, of any yet taught, Margett's ex- cepted. Published according to act of Congress.
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