Faraday s Letter. 293 



of mine on experimental branches in chemistry and 

 physics. The index and title-page has gone to the 

 printer, and I expect soon to receive copies from him. 

 I shall ask Mr. Murray to help me in sending one to 

 you which I hope you will honour by acceptance. There 

 is nothing new in it, except a few additional pages about 

 " regelation," and also "gravity." It is useful to get 

 one's scattered papers together with an index, and 

 society seems to like the collection sufficiently to pay 



the expenses Pray remember me most kindly 



to all with whom I may take that privilege, and believe 

 me to be most truly, 



Your admirer and 



faithful servant, 

 M. FARADAY. 



[My mother wrote of this letter : 



FLORENCE, 8tk Falrnai-y, 1859. 



. ... I have had the most charming and 

 gratifying letter from Faraday ; I cannot tell you 

 how I value such a mark of approbation and friend- 

 ship from the greatest experimental philosopher and 

 discoverer next to Newton. 



We returned to the continent in autumn, so I 

 could not superintend the publication of my "Phy- 

 sical Geography," but Mr. Pentland kindly undertook 

 to carry it through the press. Though I never was 

 personally acquainted with Mr. Keith Johnston, of 



