Papers on "The Just-Perceptible Difference"

Contains:

First proof and MS draft of Francis Galton's "The Just-Perceptible Difference";

MSS of "Measure of the Imagination" and "Optical Continuity", being the second and third parts of the lecture on "The Just-Perceptible Difference", but also published as independent papers in Nature;

MSS of "Signals", "Likenesses" and partial draft of "Story of the Teeth";

Diagrams, photographs and models of figures used to illustrate Galton's lecture;

References from books on the senses, and copy of Photographic Work;

Letter from Galton on erroneous figures in telegrams.

1893

13 items

The papers are available at UCL Special Collections and Archives subject to the usual conditions of access to Archives and Manuscripts material, after the completion of a Reader's Undertaking.

A digitised copy is held by the Wellcome Library as part of Codebreakers: Makers of Modern Genetics.

The original material is held at UCL Special Collections. This catalogue is held by the Wellcome Library as part of Codebreakers: Makers of Modern Genetics.