Plate, figures 11, 13, and 16 showing variation of magnetic needle at Hobarton and Toronto by Michael Faraday Plate containing figures 11, 13, and 16 showing the variation of the magnetic needle throughout the day in Hobarton [Hobart, Tasmania, Australia] and Toronto [Canada] and a diagram of the times of passages of the declination variation. Also includes one unpublished figure showing a diagram of magnetic variation. 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]