FOREL

Forel’s work on ants was praised by Charles Darwin. Such is his standing that his image appeared on the 1000 Swiss franc banknote between 1878 and 2000. 4pp, 12mo; bifolium. Lightly aged, worn at foot (with slight affect on signature); folded twice. 73 lines of text, in an untidy hand. Entirely in French, apart from the following towards the end, suggesting an English-speaking recipient: ‘Merry Christmas and New Year!’ Excellent content. The recipient appears to be a British naturalist to whom he promised a magazine piece on a recent visit.

The three letters are addressed to the translator of Forel's book, the surgeon and free-thinker Percival Macleod Yearsley (1867-1951). Forel's letter: 4to, 1 p. Twenty lines. In French. Text clear and complete. On browned and chipped high-acidity paper. Laid down on the front pastedown. In the first paragraph he thanks the translator, Macleod Yearsley, for the book, which he praises in fulsome terms. He is sending a copy of his 'Question Sexuelle'.