John Thomas Gulick Papers and Letters

Letters and papers sent by Ethel Romanes to Francis Galton:

Letter from Gulick to George J Romanes, 26 October 1890. Regarding two enclosed papers: J Fletcher Moulton's examination of Gulick's tables and calculations, and Gulick's comments on the same. Gulick advises that he hopes to determine the minimum degree of positive and negative segregation that will preserve a variety from being swamped. Enclosed are:

"Examination of Mr Gulick's Tables", J Fletcher Moulton; 11 ff.

"Remarks on Mr Moulton's Reasonings and Calculations", by John Gulick; 12 ff.

Letter from Gulick to Romanes, 17 February 1891. Gulick seeks Romanes' opinion on apparent inconsistencies in his work, discussing Segregation, his paper on Divergent Evolution, comparison of definitions of Physiological Selection, and the apparent close correspondence of their respective theories. Postscript concerning Romanes' reply to Alfred Russell Wallace in Nature (11 December 1890).

Letter from Moulton to Romanes, 21 November 1891. Regarding Gulick's criticism of Moulton's evaluation of his tables. Moulton feels that Gulick has failed to satisfy his query, and that Gulick's assumption that "the proportion of individuals who make pure unions is constant and does not depend on the proportion of the pure bred individuals to the total of the race" is incorrect.

Oct 1890-Nov 1891

3 letter plus 2 enclosures

See GALTON/2/5/4/2/26, 2/5/4/2/28 and 2/5/4/2/29

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

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.

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.