Title: 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
Subjects: Latitude, Measurement, Time measurements
People: Samuel Dunn