Paper, 'On the origin and office of the alburnum of trees' in a letter from T A [Thomas Andrew] Knight to Sir Jos [Joseph] Banks Subject: Botany Published in Philosophical Transactions as 'On the origin and office of the alburnum of trees'. Written at by Knight at Elton. Read 30 June 1808. 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. 15 June 1808