Paper, 'Account of a series of observations made in the summer of the year 1825 for the purpose of determining the difference of meridians of the Royal Observatories of Greenwich and Paris' by J F W [John Frederick William] Herschel Observations by L Mathieu published within this paper found at PT/18/8, and further observations by Herschel published in this paper found at PT/18/9. Subject: Astronomy Published in volume 116 of Philosophical Transactions as 'Account of a series of observations, made in the summer of the year 1825, for the purpose of determining the difference of meridians of the Royal Observatories of Greenwich and Paris; drawn up by J. F. W. Herschel, Esq. M. A. Sec. R. S'. Read 12 January 1826. Communicated by the Board of Longitude. 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. 2 November 1825