272 "Journal of Experiments, March, 1773 



The experiment was repeated several times and was found to agree together 

 pretty well. 



The jars were then electrified, they and the straw electrometer standing in 

 the same place, and it was found that Lane's electrometer fastened to one of 

 them discharged at 0-53^ with that degree of electrification, the same jar being 

 applied to the conductor and electrified till Henly's electrometer stood at 90, 

 Lane's discharged at 12-15. 



The conductors being then taken away and the jars and straw electrometer 

 placed in usual position, Lane's discharged at 1-17 when straw stood at 2 + 3, 

 and at I + 2 when light paper electrometer just separated. The knobs touched 

 at 0-4. 



Sun. eve. Th. 58. N. 8. 



The globe 3 electrified till Henly stood at 90, and its electricity com- 

 municated to i, 2, and 3 jars, straw electrometer separated to 2 + if. Lane's 

 with that degree of electrification discharged at 1-7. 



When Henly's stood at 90, Lane's discharged at 12 -20. 



Jar 2 charged till straw electrometer separated to 4, and electricity com- 

 municated to jar i, straw separated to 2 + \. 



When straw electrometer separated to 4 Lane's discharged at 2-0 



2 + i -52 



2 + 3 1-19 



light paper just separated i-i 



560] Excess of redundant fluid on positive side above deficient fluid on negative 

 side in glass plate and plate air &c. * 



Mon. Mar. 29'" [1773]. Th. 58. N. 7. 



The ii J inch plate coated with circles of 8 inches diameter was supported 

 on waxed glass. I charged this by touching the top with a vial charged till 

 the straw electrometer separated to 2 + 3 while I touched the bottom with a 

 wire. At the same time an assistant stood ready with a bent wire in his hand 

 ready to discharge it as soon as I took the jar away, the wire was fastened to 

 a stick of waxed glass and had the pair of cork balls commonly made use of 

 hanging to it, the cork balls separated about i inch. 



I then charged the jar 4 to the same degree and communicated its electricity 

 to the jars i & 2 and touched the upper side of the plate with one of the jars, 

 but without touching the bottom with the wire. The corks separated very 

 nearly the same as before, but of the 2 rather more. I then charged the jar till 

 the straw electrometer separated to 2 + 2 and diminished its electricity as 

 before, the corks now separated rather less than the first time. The experiment 

 was repeated several times with very nearly the same event. 



I could perceive no difference in the separation of the cork balls whether 

 the wire of the jar with which I touched the plate was 17 inches long or only 2f . 



* [See Note 30.] 



