A 



JOURNAL, 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND 



THE ARTS. 



NOVEMBER, 1810. 



ARTICLE I. 



On the Electric Column. By J. A. De Luc, Esq, F, R. S» 



Part II. 

 On the Electric Column, as Aerial Electroscope, 



JL Have said in the preceding paper, that, the sticking of The sticking of 

 the eold leaves to the side of the electroscope bein? an ob- the gold leave* 



7 , , . n ^ . ,. , . , , disadvantage. 



atacie to regular observations or their striktngs, which how- ous. 



ever I considered as the most proper manner of observing 

 the variations of this instrument, I had intended to increase 

 its power, so far as to produce the motion of a small metallic 

 ball, in hopes that the latter would not stick. 



I began this attempt by uniting together in one the three Attempt to 

 columns of 200 groups mentioned in the Jirst Part, which I move a meul- 

 had before used by only connecting them with one another; 

 and I thus formed the column of 600 groups making a part 

 of the instrument represented by the figure annexed to the 

 first part : see PI. III. With this column I made the first 

 trial of prociuing the motion of such a small pendulum in 

 the following manner. I connected with each extremity of 

 the column a wire terminated by a small brass ball; and 



Voi,".XXVU. No. 123— Nov.lSlC. M each 



