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Notebook with the above inscription, in Darlington's hand, on the cover. A label with the inscription '1933' has also been stuck onto the cover. The contents, in Darlington's hand, comprise notes and unidentified and incomplete drafts (typically just a few pages). Page headings include the following: 'Homology and Telosynapsis', 'The "Haploid" Chr. Set', 'The Theory of Genetics', 'The Cytological Theory of Evolution', 'Precocity Theory' and 'Low Charge on Sex Chrs'. Pagination occurs occasionally. The book has been used from both ends; several pages are blank. About one third into the book is a folded-over page inscribed '1933'. A few additional pages of notes have been glued onto original pages. One photograph (attached to a page headed 'Spirals') is included.

The pages are titled as follows, with the names of the authors or exhibition creators in brackets. 'The Origin of New Forms in Rubus' (M.B. Crane and Darlington) 'The Systematic Importance of Chromosome Studies in Tulipa Clusiana' (the late W.C.F. Newton and Darlington) 'Multiple Association of Similar Chromosomes in Polyploids' (the late W.C.F. Newton and Darlington)

Arranged chronologically by date of publication.

The first section is paginated variously, but these pages were found clipped together. The second section is paginated '26a-26f'.

Paginated '1-29'.

Manuscript draft and typescript draft.

Manuscript draft and typescript draft. Included are 2pp of manuscript data.

Manuscript draft and typescript draft.