Paper, 'Account of experiments for determining the length of the pendulum vibrating seconds in the latitude of London' by Capt Henry Kater 81 manuscript pages and two plates showing a plan of the pendulum and its support, frame, and other instruments, as well as the arrangement for the experiment. Subject: Physics Published in Philosophical Transactions as 'An Account of experiments for determining the length of the pendulum vibrating seconds in the latitude of London'. Written by Kater in London. Read 29 January 1818. 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 2, 1833. July 1817