Manuscript, 'On the affections of light transmitted through crystallised bodies' by David Brewster in a letter to Sir Humphry Davy Subject: Physics Published in Philosophical Transactions as 'On the affections of light transmitted through crystallized bodies'. Read 23 December 1813. 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. [1813]