Feb. 5th | 13. Ashley Place
My dear Sir,
I enclose a note from Mr Welsh,1 by which you will see that the Unifilar2 will be with you on Tuesday morning.
also I enclose a volume of instructions with the pages marked describing its use.
also, a second copy of my report at Liverpool,3 as you will probably mark up the 1st copy.
also, a note from Dr Lloyd,4 that you will like to see, as showing the amiable & candid disposition of the writer, as well as the satisfaction I must have derived from such a concession on the part certainly of my best informed opponents.
In regard to the question whether we shall ultimately learn more of the nature of Terrestrial Magnetism from the small variations occasioned by the Sun & Moon, or from the study of magnetism as developped to us on the largest scale in our own planet, I remain of the same opinion as formerly – viz that the distribution of magnetism over the globe, and its secular changes, are by much the most important to study.
Sincerely yours | Edward Sabine
Your lecture5 is I suppose at 3.PM – can you send me a ticket for myself and Mrs. Sabine?6
RI MS JT/1/S/30
Mr Welsh: John Welsh (1824–59), meteorologist and superintendent at Kew Observatory.
the Unifilar: a magnetometer in which the magnet is suspended by a single thread or filament.
my report at Liverpool: At the 1854 meeting of the BAAS, which was held in Liverpool, Sabine delivered a report ‘On Some of the Results Obtained at the British Colonial Magnetic Observatories’, Brit. Assoc. Rep. 1854, pp. 355–69.
a note from Dr Lloyd: Humphrey Lloyd (1800–81), the professor of natural and experimental philosophy at Trinity College, Dublin, pursued research primarily in optics and terrestrial magnetism. The ‘note’ is missing.
Your lecture: Tyndall delivered the fourth lecture in his series on ‘Electricity and Magnetism’ at 3pm on 6 February at the RI. Sabine attended the lecture (Tyndall’s Journal: RI MS JT/2/13c/726).
Mrs. Sabine: Elizabeth Juliana, née Leeves (1807–79), wife of Edward Sabine.
Please cite as “Tyndall1038,” in Ɛpsilon: The John Tyndall Collection accessed on