Paper, 'Addendum to the paper on the nitrogenous principles of vegetables as the sources of artificial alkaloids' by John Stenhouse Addendum to Stenhouse's paper published in volume 140 of Philosophical Transactions in 1850. Subject: Chemistry Published in volume 140 of Philosophical Transactions as part of paper titled 'On the nitrogenated principles of vegetables as the sources of artificial alkaloids'. Written by Stenhouse in Glasgow. Abstract of paper 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. 8 August 1849