Description | De Saumarez shares tables measuring the tides of the River Thames to demonstrate his marine surveyor. Followed by a page of original figures of the marine surveyor and ships on water.
Subject: Scientific apparatus and instruments / Oceanography
Published in Philosophical Transactions as 'Observations upon the tides in the River Thames, by Mr. Henry de Saumarez' and 'A further account of a new machine, called the marine surveyor, designed for the mensuration of the way of a ship at sea, more correctly than by the log, at present in use, or any other method hitherto invented for that purpose. By Mr. Henry De Saumarez, of the Island of Guernsey, part of His Majesty's antient Dutchy of Normandy' |