Practical methods by trial and error for finding the latitude and time at sea, by the observed altitudes of the sun, moon, and stars, and the elapsed time between the observations ; (which will frequently be successful in the short interval of ten minutes,) or by the altitudes of any two celestial objects observed at the same instant, at any time of the day or night

originally submitted by Mr. Samuel Dunn, and now fully exemplified, and the reasons pointed out in the few cases where they have failed, which these methods obviate : also the method of reducing the moon's place, from the Nautical almanac of 1833, &c

by Thomas Lynn

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