Correspondence concerning various scientific institutes, giving notification of rules, meetings, reports, agendas and other matters. The correspondents include E.W. Brayley, M. Faraday, Lord Rosse, E. Sabine, W. Whewell, Lord Wrottesley and J. Yates. The papers also includes minutes of the council of the British Association and a copy of the lecture given by Airy at the Royal Institution 'On the results of recent calculations on the Eclipse of Thales and other eclipses connected with it'.