Show OF mr CHAIN n G ini ca course urse recently read bea before oree thee the royall aroya em y by mr W V R grove it wits was and proved by e experiment ap e ra ilent that tbt f taj the 1 of rarefaction upon gases either Os as a i pi n ed by the air pump or by heat beat tendo tp it der discharges of electricity more mor a f family oi 10 to enable them to pass across much 4 aw spaces than would otherwise be the jae cg IN so strikingly was this evidenced with f I 1 that when the tare ume flame of a spirit I 1 lamp a M 1 held near one of the terminal points arf 1 i coil apparatus arp aratus of tha tern a being woj tp separated sepe e e rated r a ed to a distance far fan ae b e 2 I 1 that at which h h the spark would pass ammo in I 1 air the spark darted to and along fhil thea gin of the flame aade 7 and could be carat cun twisted about I 1 in any direction at ft of the expert experimenter mena giving dying a perfect of the crooked va form of liet aig and of the probable reason w why h YA it t d do 1 pass jin straight line lies the tempera tem er tj I 1 the air bein being 9 different at different i erent po i 1 its passage and much of this V vas oll of temperature being in in all i casio ned by the mechanical effects discharge itself upon the abe air I 1 |