APPENDIX 



agrees with the above ; it is conjectured that it may be 

 the same. 



11. A Galvanic Battery, made by Dr. Wollaston, in a tailor's 

 thimble. Presented to the Royal Society by Sir A. W. Franks, 

 June 28, 1879. 



In a letter to the late William Spottiswoode, P.R.S., 

 which accompanied this present, Sir (then Mr.) Augustus 

 Wollaston Franks says that this little battery was given by 

 his godfather, Dr. Wollaston, to his mother, then Miss 

 Sebright. See also an anecdote about this battery in Weld's 

 History of the Royal Society, vol. ii. p. 309. 



12. Dr. Priestley's Electrical Machine. 



13. The original Model for Davy's Safety Lamp. 



14. The Mountain Barometer used by the late Mr. Charles 

 Darwin, F.R.S., during his voyage round the world in H.M.S. 

 Beagle. Presented by his executors in December 1899. 



The remainder of the instruments lately in the possession of 

 the Society have been deposited in the Victoria and Albert Museum, 

 South Kensington. 



(From the Record of the Royal Society.) 



