Thermometrical navigation - Being a series of experiments and observations, tending to prove, that by ascertaining the relative heat of the sea-water from time to time, the passage of a ship through the Gulph Stream, and from deep water into soundings, may be discovered in time to avoid danger, although (owing to tempestuous weather,) it may be impossible to heave the lead or observe the heavenly bodies. Extracted from the American Philosophical Transactions. Vol. 2 & 3. With additions and improvements. One line from Poor Richard

Förlag	År	Ort	Om boken	ISBN
Printed and sold by R. Aitken, no. 22, Market Street	1799	USA, Philadelphia	xii, 102 sidor., [1] folded leaf of plates map 8⁰.