Paper, 'A new and exact table collected from severall observations taken from the year 1721 to 1729 in 9 voyages to Hudson Bay North America by Capt C Middleton shewing the variation of the compass according to the lattitudes and longitudes under mentioned accounting the longitude from the meridian of London' by C [Christopher] Middleton Tables showing variation of the magnetic needle at various latitudes and longitudes on various journeys to the Hudson Bay in Canada. Subject: Magnetism / Navigation Published in Philosophical Transactions as 'A new and exact table collected from several observations taken from the year 1721 to 1729, in nine voyages to Hudson's Bay in North-America, by Captain C. Middleton; shewing the variation of the compass according to the latitudes and longitudes under-mentioned, accounting the longitude from the meridian of London. Communicated by Mr. Benj. Robins, F. R. S'. Communicated by Benjamin Robins. Read to the Royal Society on 24 June 1731. [1731]