Thomson acknowledges receipt of Ledermann's letter and manuscript, expressing pleasure at Ledermann's continuing interest in factor analysis.
Thomson draws parallels between a formula Ledermann uses and the work of Kelley, specifically his pentad criterion as discussed in Crossroads in the Mind of Man.
Thomson asks Ledermann to explain an article of C Spearman's. The unnamed article is referred to in Spearman's The Abilities of Man, and regards the reversibility of proof of Spearman's tetrad criterion.
Scope and Contents
In Ledermann's letter to Thomson, dated 25 Apr 1939, he informs Thomson of his applying for the Carnegie Teaching Fellowship, which would allow him to undertake original research in the areas of pure matrix algebra and abstract group theory. He also mentions that he would like to devote some time to applied mathematics, specifically factor analysis, and asks Thomson for permission to continue the work he undertook as Thomson's assistant, perhaps with the help of...
Scope and Contents
This volume, comprising 374 items mounted on 267 pages and covering the city of Edinburgh, is the first in this set of eight scrapbook albums compiled by the naturalist Adam White. Geographical coverage is largely restricted to the Edinburgh of White’s day: that is, to the then Burghs of Edinburgh (including the Old and New Town) and the Canongate.Material relating to other areas within the city’s present-day boundaries – such as Holyrood Park, Restalrig, Merchiston and the Burgh...
Thomson acknowledges receipt of Kelley's book, Crossroads in the Minds of Man. He advises Ledermann with regards to referencing Kelley's pentad criterion in his paper, while still recognising Ledermann's shorter method for arriving at the same result.
Thomson cites Psychometrika as the best publication for the paper, and offers to send it there if Ledermann is in agreement.
Thomson refers to a letter he was planning on sending to Nature, which was originally enclosed but has not survived in the collection. He asks Ledermann to check the letter, and post it if it is correct.
Scope and Contents
In Thomson's letter to Ledermann, dated 19 Jun 1939, he apologises for not replying to an earlier letter of Ledermann's and informs him that he will be happy to send him any of the letters he has written regarding his work from the last year, asking him to specify the subjects he is interested in. In his reply, dated 24 Jun 1939, Ledermann tells Thomson that he would like to look at the problem of maximising and minimizing the specifics, and that he has...
Scope and Contents
This, the second volume in Adam White’s set of eight scrapbook albums, contains 376 items mounted on 253 pages and covers the counties of Mid-, East and West Lothian: the Midlothian coverage including areas such as Holyrood Park, Duddingston, Merchiston and the Burgh of Leith which today fall within the boundaries of the City of Edinburgh.The arrangement is broadly by locality, and the emphasis of the contents is on topography and architecture, including views of castles – such...
