[ 22 4 ] 



EXPERIMENTS, 1772* 



{Journal: from MS. N. 13. See Table of Contents at the beginning of this volume. 

 The footnotes refer back to the formal account of results. } 



466] Plan of usual disposition of vials and bodies to be tried &c a drawn in 

 the true proportion and shapef. 



8 is the trial plate, B the body to be tried, A and a the vials, mM and rR 

 the touching wires. 



mM} MN = 41, XT . n 



rm = 83 inches, \ = 27, ,, N = 24, AC = 10. 



rK. ) Kb = 01, 



Height of body and trial plate above ground = 4-2 



below horizontal bar = 3-1 1. 

 All the wires were about -07 thick. 



[East] 



[North | 



[South] 



\E 

 [West. Scale A] 



467] Comparison of quantity of electricity in a tin plate one foot square, 

 according to the different situations in which it was electrified. The trial plate 

 was suspended on waxed glass, the plate to be tried on silk strings J. 



Description of the different ways in which it was tried. 



Fore Observation The plate horizontal and placed as in figure, the touching 

 wire also as in figure but extending to different distances upon the plate [called 

 2 nd and 3 rd way in Art. 266]. 



* [This is the heading of this bundle of the Journal, though the dates up to 

 Art. 475 belong to 1771.] 



f [See Art. 240.] } [See Exp. in. Art. 265.] 



