Paper, 'On the motion of gases, part II' by Thomas Graham Subject: Chemistry Published in Philosophical Transactions as 'On the motion of gases.—Part II'. Received and read by the Royal Society on 21 June 1849. 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 5, 1851. [1849]