Sensitiveness of electrometers 



279 



heavy straw electrometer separated to ', divisions, the light straw electrometer 



separated to 



Small 

 divisions 



Large 

 divisions 



567] As the straws seemed not to conduct well enough, they were gilt. 

 The gilding was not perfect in several places, but it was sufficient to conduct 

 the shock of a jar very weakly electrified. 



Added 

 weight 



12 



CN 

 Heavy electrometer < ' 



Tu. Apr. 13. 



The globe 2 electrified and communicated to globe 3. 



IO-I 



Heavy el. 



13 

 12 

 IO 



8 



Light 



154 



14 



12 



104 



8 

 ro 



12 

 13 



Globe 3 communicated to 2 

 8 



Wed. Apr. 14. Th. 51. N. 13. 



Globe 2 communicated to 3 



94 

 n| 



14 

 154 



It was found that some electricity ran from the electrifying wire to the 

 knob of the globe to which electricity was to be communicated, on which the 

 knob was removed to such a distance that no sensible electricity ran from 

 one to the other. 



10 

 12 

 13 



104 

 13 



14 



Globe 3 communicated to 2 



13 

 12 



10 iqj 



8 8| 



Globe 2 communicated to 3 



13 



12 



14 



N.B. The holes where the wires were put in were gilt over. 



N. 2 



N 



' > of heavy electrometer were found to weigh 



16-65 

 19-65 ' 



The wires were then taken out, the holes stopped up with wax and gilt 

 over. It was then found on electrifying the globe without communicating its 

 electricity to the other, that when the heavy electrometer stood at 



8 9 



the light stood at "f 

 13 14! 



