Title The new American practical navigator [microform] : 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 of 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.