258 Journal of Experiments, Oct. 1773 



given quantity of redundant fluid separate to given distance balls of , that 

 weight separate to same distance with half that quantity of redundant fluid. 



526] Whether the charge of plate E bears the same proportion to that of another 

 body whether the electrification is strong or weak: tried by machine for Ley den vials. 



Wed. Oct. 27 [1773]. Th. 61. Com. 8J. N. 2oJ. 



Plate E of Nairne on neg. side against sliding tin plates placed at end of 

 long wire [20 observations]. 



Result. Therefore with light electrom. the plate E is balanced 



, 14-03 + 8-17 

 by a square of - ' + x = n-i + x, 



IO-OQ + 12-33 

 with heavy el. by - 2 - + x = 11-21 + x, 



10-50 + 11-23 



+ x = 10-91 + x. 



2 



The plate E is balanced by 37 inc. el. 



527] Plain wax and 3 rd dephlegmated wax with E + F and 5 th rosin with 

 double plate A and B. Also small ground crown with D + E 4- F, and large do. 

 with C. 



The coatings were taken off from 4 th rosin, and coatings 1-79 inc. diam. put 

 in their room. This is called 5 th rosin. 



A plate of dephlegmated bees wax was also made [-120]* inc. thick and 

 coatings put on 3-525 inc. in diam. This is called 3 dephlegmated bees wax. 



A plate of plain bees wax was also pressed out [-119] * inc. thick and coatings 

 put on 3-475 inc. diam. 



A piece of thick crown glass was procured from Nairne about -26 thick and 

 ground down equally on both sides to about -07 inc. thick. Two circular coatings 

 were put on, one 3-54 inc. in diam. the other 2-035. 



Wed. Jan. Th. 56. N. 27 [16 observations]. 



528] K, L and M compared with D + E + F at distance and close together; also 

 large ground crown with C and small one with D + E + F; also 3 rd dephlegmated 

 wax and plain wax with E + F; also 5 th rosin with double B. 



Friday, Jan. 29 [1773]- Th. 3$. N. i6. 



Tried with middle sized cork balls and a new white large trial plate [18 

 observations. Art. 656]. 



529] K + L + M compared with A, B, and C; also A + B + C with H. 

 Sat. Jan. 30 [1773]. Th. 50^. N. i6. [20 observations. Art. 657.] 



* [These measures are left blank in the Journal. I have supplied them from 

 Art. 371.] 



