An Account of Part of a Roof of a Pothouse at Lambeth Being Flung down by the Earthquake, March 8. 1749-50. Communicated by Mr. Wm. Jackson, Potter, to C. Mortimer, M.D. Secr. R. S.

XLV. An Account of Part of a Roof of a Pot-house at Lambeth being flung down by the Earthquake, March 8. 1749-50. communicated by Mr. Wm. Jackson, Potter, to C. Mortimer, M.D. Secr. R. S. Read June 21. 1750. At a Pot-house belonging to Mr. Oad in Gravel-Lane, a large Part of the Roof, containing near two Square, was entirely thrown down by the last Earthquake, March 8. 1750. and several Fishermen, then at Work, imagined a Porpoise, or some other large Fish, had risen under their Boat. XLVI. Extract of Letter a from Dr. Mackenzie to Dr. Mead F. R. S. concerning Earthquakes at Smyrna. Constantinople, May 23 1750. Read July 5. 1750. I observe, Sir, in Mr. Touchit's Journal, that a certain ingenious Gentleman would not allow the last Shock of an Earthquake in London to be an Earthquake, because it was not central; but rather calls it an Airquake, because it was lateral. I have felt many Shocks, since I have been in this Country; particularly in Smyrna 1739. when,