| Request | Request for use in Library or view online if digital version available |
| Reference |
PP/CRI/H/6/12/1
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See the rest of this archive
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| Level |
Item
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| Extent |
1 file
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| Title |
"The writhing number made easy"
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| Date |
1975
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| Box Number |
94
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| Ordering Instructions |
This is an Item level record: click on the appropriate options to consult it in the Rare Materials Room, provided it is not Closed, or to order copies. If the Item has been digitised there will also be a link at this level to a digital facsimile.
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| Description |
Draft texts (holograph and typescript) of Crick, "The writhing number made easy". In earlier drafts (two included), the paper has the title (pace James Watson) "Writhing numbers for birdwatchers". The paper was eventually published as Crick (1976), "Linking numbers and nucleosomes".
The opening paragraph to the paper states that it is "an expansion and clarification" of F Brock Fuller (1971), "The writhing number of a space curve".
Together with notes (holograph), the file includes two letters from Fuller to Crick, and one in return.
Also included is a single photocopied sheet (source unidentified) which gives practical advice on cable- and rope-coiling ("As any seafaring man can tell you, rope coiling is an art..."). A portion of the text is boxed in blue pencil and at the head of the sheet is written, in the same blue pencil, "A practical approach to the writhing problem".
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| Digitised |
Yes
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| Access Status |
Open
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| Reproduction Conditions |
Photography is permitted for non-commercial research and private study. Please note that material may be unsuitable for copying on conservation grounds. Researchers who wish to publish material must seek copyright permission from the copyright owner.
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| Copies |
A digitised copy is held by the Wellcome Library as part of Codebreakers: Makers of Modern Genetics.
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| MaterialType |
Archives - Non-digital
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| System No. |
9ebb71b8-69d3-4282-b811-b8ca70040263
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