648 

Length of 
Spark in 
Centimetres. 

1:0 
oa) 

Tas_e [V.—Distance Curve, 9th July 1877. Electrodes, large discs. 
Length of 
Spark in 
Centimetres. 

Deflection. 
nN. 
350 
304 
300 
330 
330 
030 
310 
312 
315 
300 
308 
303 
285 
286 
290 

TABLE II1.—continued. 
Zero. 
ni. 
515 
514 
517 
523 
516 
522 
523 
525 
523 
525 
030 
533 
536 
538 
Observed 
Diff. of 
Potential. 
n—n. 
165 
160 
167 
187 
193 
186 
Py 
itil 
210 
223 
2 
227 X 
250 
250 
248 

Mean 
Diff. of 
Potential. 


Mean Diff. 
of Potential 
in ahsolute 
measure. 
Vi. 
44-931 
51°780 
57°807 
62°192 
68300 
ALEXANDER MACFARLANE ON THE 

| 

Calculated | 
Valuein | 
absolute | 
measure. | 
WV 
45°304 
2 | 
51640 | 
57-904 | 
64-091 
70°207 
—1°899 
—1-907 

750mm. Temperature, 73° Fahrenheit. 
Equation, V = (67:015 —2°5142s) ,/ iP 4 Qh. 
Deflection. 
N. 
502 
502 
502 
495 
493 
494. 
488 
488 
488 
479 
479 
478 
470 
470 
470 
462 
460 
459 
448 
448 
451 

Zero. 

Observed 
Diff. of 
Potential. 
nm —n,. 
SS 
ier 

Mean 
Diff. of 
Potential. 
| 10 
\ 18 
‘ 
\ 24 
| 30 
\ 42 
Lost 
i 5) 
\ 63 

ed 

Pressure, 

Mean Diff. 
of Potential 
in absolute 
measure. 

Caleulated 
Value in 
absolute 
measure. 


ive tear a | weet 
#5 
Difference. 
vi—V. 
t fe ft tareng pad 


