Paper, 'Description of an extraordinary human foetus' in a letter from Mr B [Benjamin] Gibson to H [Honoratus] Leigh Thomas 33 manuscript pages and one plate showing an anterior view of the heart and arteries of the foetus. Subject: Anatomy Published in Philosophical Transactions as 'Description of an extraordinary human fœtus. In a letter from Mr. Benj. Gibson Surgeon, to H. Leigh Thomas, Esq. F. R. S'. Written by Gibson in Manchester. Read 8 February 1810. Abstract published in Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society of London], Volume 1, 1832. June 1809