54 
79. It is well ‘cw? ‘that -paty teed pa pieces o 
ty 
& 
Dr. Hare on nthe Theories 7 Blectrical Phenomena. 
make one 
ai cca more > aia while i in.the By 
oducible at an infinitely esate distance. 
: : (18: 
quen nt s 
waves 6f Sheer peenue polari Bane Lar 
‘the intervening gaseous matter. Ve. Se aoe 
Of Beh aes ae oe eae, * ae 
£1 bILCI CY 
attached, one to the negative, the other to the are pole ot 
f flame 
a pores and. well excited voltaic series, an arcl 
Stich, of contact, cannot be re 
ferred, that the carbonaceous vapor is indisp 
fore th 
~_ besides Gest toale this being the only conductor which is suffi- 
“aly infusible, and yet duly volatilizable. ly 
produced by moving them apart after contact. 
# 
feadngn evidently depends upon the volatilization Tok 7. 
era ee matter concerned; since it cannot be produced be-. 
n has been volatilized by contact, nor by any body. . 
Metals, similar 
‘man, together with the opposite a pearance on the positive chase 4 
coal, may be owing to the lesser affinity for oxyg yen on th > neg-* 
ative side.* Se ape os 
_ 80. There may be some resemblance’ scatter babse cen 
inous discharge between the poles, and that which ha 
luminous dischar hich 
a ady been designated as diruptive (69); but this flamin 
"discharge does not break through the air, it only usurps 
, gradually, and then sustains this usurpation. It differs 
di 
“ee 
other as to its. cause, so far as galvanic reaction iffers { from 
tion; 
ble ponderable conducting substance to enable its appropriate 
dulations to meet at a mean dista lid 3 se: 
nations, whence they roapesti¢ely. be 
81. The most appropriate desigt 
moreover, it requires a volatilizable, as well as a polari 
der consideration, is that of etl Le » undulatory sae ts | 
gration. Under this head, w not zg i the flaming ah ’ 
but likewise the active ignition and gee of fine “wire or 
leaf metal, or ‘when ” at ne span yole an 
he other. : by y 
