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Notes of lectures in Natural Philosophy by Professor Robison taken down by T.C. Hope in 1785.

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Volume contains manuscript notes on magnetism, with numerous diagrams and tables.

Scope and Contents This sub-series contains 23 files relating to Magneto-Ion Theory, c.1925. With the exception of Coll-37/C.221, the material was crammed into a bulky folder inscribed 'Some observations on the polarization of downcoming wireless waves'. The folder also has a later note ‘Magneto-Ionic Theory' by C. S. Gillmor, to whom is also owed the identification of W. Altar (see Coll-37/C.214-C.216). Appleton's own notes and drafts, which are almost never dated, appear at Coll-37/C.199-C.213....

Scope and Contents Notes to an extended conversation with Fatio de Duillier, fellow enthusiast of Newtonian science at Oxford, and especially important to Gregory between December 1691 and May 1694, when he was cut off from direct contact with Sir Isaac Newton, whom he had offended in a published commentary on his 'abrumpent' mathematical series. Topics include magnetic attraction, refraction and colour, and movement of solids through fluid, with anecdotal remarks by de Duiller about ships, tides, and the...

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'Note on Dispersion Problem'. The material consists of manuscript draft notes for a paper by Edward Appleton with a partial typed version attached, no date, c. 1925-1943.

Scope and Contents Notes and calculations by Edward Appleton. The material is about or related to magneto­ionic research but was not included in the original folder. It consists of 'Some Unsolved Ionospheric Problems', 2 pages, no date but after 1943; 'Oblique Incidence', 1 page, c. 1934; a 4 page note 'To show that, assuming perfect reflection a tilted aerial can give no information of direction of reflected wave', no date, c. 1934; 6 pages of notes on vertical and oblique incidence, no date; and...

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Notes, narratives and calculations by Wilhelm Altar, no date. The material consists of 5 bundles of notes and 2 photographs.

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'Notes on magneto-ionic theory'. The material consists of 5 pages of notes by Edward Appleton, much of it occupied with Lorentz's theory and the problem of negative and positive signs for the rays, no date, c. 1925-1943.

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‘Propagation of electromagnetic waves through an ionized gas in a magnetic field’. The material consists of a variously paginated and annotated draft by Edward Appleton, no date, c. 1925-1943.

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'Propagation of waves in an ionized gas under the influence of a magnetic field'. The material consists of a 16 page draft by Edward Appleton in its original folder, no date, c. 1925-1943.