20ff lAW OF GALVANISM IN BURNING THE METALS, 



In confequence of this oil freezing much fooner than watcr^ 



the following queries feem to claim our attention ; 



Hence it may Swery 1. Will a time-keeper go at the fame rate when the 



ceffarrto\dtuft ^'' '^^ frozen, that it did when the oil was in a fluid ftate ? 



and keep time- If this query be anfwered in the negative, 2uerj/ 2. Would 



keepers at tern- jj j^^^ jj^^j^ ^^ improper to adjuft the compenfation balance in 

 pcratures be- * * •' ^ 



twcen 43' and frofty weather ? 



i©o'« 2uery 3. Would it not be better to adjuft the compenfation 



for the efFeds of heat and cold at 43** for the greateft degree 

 of cold, and at 96 or 100** for the other extreme ? 



A chronometer adjufted in this manner, (hould never be 

 expofed to a greater degree of cold than 43. This may be 

 eafily done with pocket chronometers, but to keep the oil 

 from freezing in box time-keepers, in cold climates, more 

 care may be requifite. 



Oil has other properties which ought to be carefully examined 

 before it be applied to time-keepers, but this is an inquiry 

 which muft be left until forae future opportunity. 

 I am. Sir, 



With much refpe6t. 



Your humble fervant, 



E. WALKER. 



X. 



Letter from C. Wilkinson, Efq. containing FaBs upon which 

 Dedudtions are made to Jhexv the Law of Galvanifm in burn" 

 ing the Metals, according to the Dijpofition of equal Surfaces 

 qf charged Metallic Plate, 



To Mr. NICHOLSON, 

 SIR, 



AF the following obfervations fiiould be deemed worthy of 

 infertion in your valuable Journal, I fliall take the liberty of 

 troubling you with fome further remarks hereafter. 



I am. Sir, 



Yours refpedfuHy, 

 Soho Square, C, WILKINSON. 



5 When 



