668 ALEXANDER MACFARLANE ON THE 
TaBLE XX V.—Long Distance Curve, 22d May 1877. Dielectric, Air. 
Electrodes, balls. Pressure, 40 mm. 
Equation, V =16°752s? —6364s?. 
Length of Observed 
: : ; Mean Diff. Calculated Diff. : 
cetimntcs,| atm | 7 | pO ah, | of Potential. | “of Potential, |  Papeeyee 
Ss. n—n. : : 
i} 480 496 16 
if 479 r 17 16°3 Gu: +0:2 
(| 480 4 16 
473 Fe 23 
2 473 23 23 21:9 +11 
473 a 23 
470 5 26 
3 472 2 24 25°77 25°7 0:0 
469 é oF 
470 i 26 ) 
4 468 ~ 28 27°3 28°4 —11 
468 - 28 if 
467 3 29 
5 467 29 } 29°3 30°3 —10 
466 s 30 
f 465 . aL 
6 466 se 30 30°7 alee —10 
\) 465 i 31 
463 ss 33 
Uh 465 * 31 oP al 32°5 +0°2 
462 if 34 
463 4 ao 
8 463 if 33 32:7 33-0 —0'3 
464 a 32 
460 iy 36 
9 461 3 35 35:3 33:1 +99 
461 a 35 


