564 ALEXANDER MACFARLANE AND P. M. PLAYFAIR ON THE 
charged these palladium electrodes with hydrogen in the usual manner, took a 
number of sparks between them, then having heated the wires by means of a 
battery of four Bunsen elements, we took sparks again. Our observations do 
not indicate decisively any results, but they point out conclusions which may 
be established by further experiments. 
TABLE I1—Discharge of Electricity through Parafin.—5th December 1878. 
Electrodes, Parallel Plates each four inches in diameter. Length of Spark, ‘3 centimetre. 
Jars on Holtz Machine. 
: Ditterence of Diff. of ; ; 
Dielectric. State of Dielectric. | Deflection, Oe Potentials, Potentiale in Electric 
ie ae nn. C. G. S. Units. Strength. 
Paraffin in lst Spark, 40 510 470 130 5:0 
Solid State. 2d 5, 380 aoe 130 | 
ad. 385 Fac 125 130 
4th ,, 380 aes 130 
Sth "3, 370 — 140 J 
After interval 
| of 10 minutes, 370 ets 140 
Air. a 416 508 92 
417 Ae 91 ¢ 
Log: Skat adn rooeaee 28 140 
410 fi 98 | 
Paraffin in | Quite clear, 260 505 245 
Liquid State. 270 See al Meee P 
290 510 | 2206779 ee = 
288 ar 222 
Beginning to 
| solidify on 
| plates, . . 275 520 245 
Solidified on 
sides of glass 
vessel, . . 200 520 320 
Surface of par- 
affin solidified, 130+ 520 390 
Aftersome time,) 200 515 315 
After some time,) 250 510 260 
* 
Surface blown up by discharge, 
