| RefNo | AP/27/12 | 
| Level | File | 
| Title | Unpublished letter, 'On the structure of the ultimate fibril of the muscle of animal life' from Erasmus Wilson to Peter Mark Roget | 
| Date | 5 June 1844 | 
| Description | Using a powerful microscope, Wilson is able to make discoveries on the structure of the ultimate muscular fibril. He records his observations upon a specimen taken from the arm of a strong, healthy man immediately after its amputation. He finds each fibril to be composed of minute cells with flattened surfaces, arranged in a linear series, creating a uniform cylindrical shape. 
 Followed by one page of diagrams regarding the structure of the ultimate fibril of the muscle of animal life.
 
 Subject: Biology / Physiology
 
 Received 13 June 1844. Communicated by Roget.
 
 Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 5 of Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society] as 'On the Structure of the Ultimate Fibril of the Muscle of Animal Life'.
 | 
| Extent | 14p | 
| Format | Diagram | 
| Manuscript | 
| PhysicalDescription | Ink on paper | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| RelatedMaterial | DOI: 10.1098/rspl.1843.0027 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA6616 | Roget; Peter Mark (1779 - 1869); physician and philologist | 1779 - 1869 | 
| NA7637 | Wilson; Sir; William James Erasmus (1809 - 1884) | 1809 - 1884 |