The new American practical navigator :
being an epitome of navigation; containing all the tables necessary to be used with the Nautical almanac in determining the latitude, and the longitude by lunar observations, and keeping a complete reckoning at sea ... the whole exemplified in a journal kept from Boston to Madeira ... with an appendix, containing methods to calculating eclipses of the sun and moon, and occultations of the fixed stars ... /
by Nathaniel Bowditch ... and, since his decease, continued by his son, J. Ingersoll Bowditch.

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Full view   New York Public Library