[ "8 1 



EXPERIMENTS ON ELECTRICITY 



{See the reasoned summary of methods and results in the latter part of 

 Prof. Clerk Maxwell's 'Introduction.'} 



{I.} EXPERIMENTAL DETERMINATION OF THE LAW OF 

 ELECTRIC FORCE. 



[From MS. N. 7: apparently prepared for publication. See Table of Contents 

 at the beginning of this volume.] 



217] I now proceed to give an account of the experiments, in all of 

 which I shall suppose, according to the received opinion, that the elec- 

 tricity of glass is positive, but it is not at all material to the purpose of 

 this paper whether it is so or not, for if it was negative, all the experi- 

 ments would agree equally well with the theory. 



218] EXPERIMENT I. The intention of the following experiment was 

 to find out whether, when a hollow globe is electrified, a smaller globe 



inclosed within it and communicating with the outer one by some con- 

 ducting substance is rendered at all over or undercharged; and thereby 

 to discover the law of the electric attraction and repulsion. 



