Paper, 'On the formation of the bark of trees' in a letter from T [Thomas] A [Andrew] Knight to Right Hon Sir Jos [Joseph] Banks Subject: Botany Published in Philosophical Transactions as 'On the formation of the bark of trees. In a letter from T. A. Knight, Esq. F. R. S. to the Right Honourable Sir Joseph Banks, K. B. P. R. S. &c'. Read 19 February 1807. 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. 19 February 1807