Descriptive Report. 127 North Walsham.—Felt by several people in the upper storeys of houses. Norwich.—Distinct shock felt in many buildings, and a noise as of a heavy traction engine heard. The following letter has been received from this town :— " Norfolk and Norwich Hospital, Norwich, " April 23rd, 1884. " I was reclining in an easy chair, my head being east and feet west. At 9.18 a.m. I heard a rumbling as if some very heavy engine might be passing, and at the same time the whole hospital oscillated, and of course my chair too, in a direction north and south; the oscillations appeared to me to come from the south; they were five or six apparently, and did not last more than ten seconds. I was able to form a very fair idea of the plane of oscillation from its being perpendicular to my own axis. I looked at my clock immediately, and have allowed for error of time. I can hear of no damage being done anywhere in Norwich. My aneroid was quite steady at 29.8. " Donald D. Day, F.R.C.S." Southrepps.—The Rev. E. H. Gwyn informs me that the shock and vibrations were felt in the upper but not in the lower rooms of the Rectory. On the ground floor a large picture in the drawing room moved away from the wall (direction not given), and smaller pictures and furniture were shaken. No bells rung nor clocks stopped. Swaffham.—Felt slightly in a few houses. Thetford.—Felt by a person in a bedroom; about 9.30 (?) Yarmouth.—Shock felt in some houses; bells rung in houses on Marine Drive ; furniture shaken, and a rumbling as of a heavy vehicle heard. Cambridgeshire. Cambridge.—Shock distinctly felt in various parts of the town and at some of the colleges; rumbling sound heard ; doors thrown open and pendent articles swung. Time about 9.15 (?) Mr. J. H. Turner, postmaster, states that he was lying unwell in bed, extended from W. to E. on his side,