Plate, figures 10-12 showing variation of direction of the magnetic needle in Toronto and Hoberton [Hobarton] by Michael Faraday Plate containing figures 10-12 showing the variation of direction of the magnetic needle in winter and summer in Toronto [Canada] and Hobarton [Hobart, Tasmania, Australia]. Subject: Physics Published in Philosophical Transactions as part of paper titled 'Experimental researches in electricity. ─Twenty-sixth series'. Written by Faraday at the Royal Institution. Received by the Royal Society on 9 October 1850. Read 2 November 1850. [1850]