Practical Rule for Calculating, from the Elements in the Nautical Almanac, the Circumstances of an Eclipse of the Sun, for a Particular Place [Transactions of the American Philosophical Society, vol. 5 New Series, Article XIII]
Philadelphia: Printed by James Kay, Jun. & Brother, 1837. [1], 298-317, [1] p.: tables; 29 cm. Disbound from a larger volume. Read before the Society on March 6, 1835. John Gummere (1784-1845) taught at Westtown Friends School and ran his own school for boys in Burlington, N.J., before receiving his..... More