.1 Letter from J. Arthur Thomson to James Oliphant (brother-in-law of Anna Geddes). Presents his views on Oliphant's article on Geddes's variation theory. 1 p.
.2 Letter from James Oliphant to J. Arthur Thomson. Oliphant is unconvinced by J. Arthur Thomson's arguments and expresses his own opinions on the matter. 4 pp., numbered.
Manuscript.
Thomson, Sir John Arthur, 1861-1933, Knight, zoologist