﻿xx Proceedings. \December ijth y 1904. 



notes about any of these shocks would be most useful, but I 

 should be especially glad to receive accounts of those of March 

 17, 1843, November 9, 1852, October 6, 1863, October 30, 1868, 

 March 15, 1869, March 17, 1871, and February 10, 1889. 

 Notices of the local shocks in mining districts would be of much 

 interest, as also would be records of the effects of the great 

 Lisbon earthquake of 1755, if any such are known to have been 

 observed. 



The points on which I desire most to obtain information are 

 indicated in the appended series of questions. I may add that 

 I shall be glad to send printed copies of these questions to any 

 Members of the Society or others who may be able and willing 

 to give, to however slight an extent, the valuable assistance 

 suggested in this letter. 



Questions. 



1. Place of observation. 



2. Condition of the observer when the earthquake began: (a) 



indoors or outside, (b) awake or asleep. 



3. Time of occurrence. 



4. (a) Nature of the shock, (b) Did it consist of two distinct 



parts separated by a brief interval of rest and quiet ? (c) 

 If so, which part was the stronger, and how long was the 

 interval between them ? 



5. Was the shock strong enough : (a) to make doors, windows, 



etc., rattle ; (b) to cause the observer's seat to be per- 

 ceptibly raised or moved ; (c) to make pictures, chande- 

 liers, etc., swing? (d) to overthrow ornaments, vases, 

 etc. ; (e) to throw down chimneys, or crack the walls of 

 buildings? 



6. Was any unusual sound heard at the time, and what did it 



resemble ? 



7. Were any slight shocks felt before or after the principal 



earthquake j if so, at what times, etc. 



Mr. CHARLES Oldham communicated the following " Note 

 on the Dissemination of Seeds by Birds." 



