﻿Electricity on Insulators and Metals. 267 



In figs. 2 and 3 the charges produced by various amounts 

 of work are plotted as curves. They show, as observed by 



Fig. 2. 



12 



Peclet * and Owen t, that with a sufficient amount of work, 

 the charges reach a constant maximum. Results have been 



* Ann. do Chimie et do Physique, lvii. p. 337 (1834). 



t Loc. cit. 



