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-park- are passed through it ( Marii^nac and I >e l;i Rive). Hence it is 

 proved, by a method fur its preparation from oxygen and by a method of 

 its transformal inn into ox v^'en (synthesis and analysis), that oxone is tliat 

 same oxygen with which we art- already acquainted, nnly endowed with 

 particular properties and in a particular state. However, lv whatever 

 method it IK' obtained, the anmiint of it contained in the oxygen is 

 inconsiderable, general Iv only a few fractions of a per cent., rarelv 

 '2 percent., and only under verv propitious circumstances as much as 

 l'<> per cent. The reason of this must be looked for first in the fact 

 that "_"/" lit it* foi-inatioii from o.i'ij<i<'n dltxorb* If-nt. If any substance 

 be burnt in a calorimeter at the expense of o/onised oxygen, then more 

 heat is evolved than when it is burnt in ordinary oxygen, and Berthelot 

 showed that this ditl'erence is very lar^e namely, L'Uo'OU heat units 

 correspond with every forty-eiuht parts by weight of oxone. This 

 Minifies that the transformation of fort y-eii^ht parts of oxvgen into 

 nxone is accompanied by the absorption of this quantity of heat, and 

 that i In- reverse process evolves this quantity of heat. Therefore the 

 passage of oxone into oxygen should take place easily (as an exother- 

 mal reaction), like combustion : and this is pmved by the fact that at 

 _'."(> oxone cnlirelv disappears, foi-minn' oxyuvn. Anv rise of tem})era- 

 ture may thus brini;- about the breaking u]> of oxone. and as a rise of 

 temperature take.-j jilace in th(> action of an electrical discharge, 

 therefor** there are in an electric discharge the conditions both for the 

 preparation of oxone and for its destruction. Hence it is clear that 

 the transformation of oxygen into oxone, <>* >> /'ft't'i'siti/f i'>'<i<'t ton, 

 has a limit when a state of equilibrium rs arrived at between the 

 products of the i \\ ( i opposite reactions, that the phenomena of this 

 transformation accord \\ith t he phenomena of ili.<ot<n*mti<ni, and that a 

 fall of temperature should aid the format ion of a l;irg<- quantity of 

 oxone. 1 Furiher. it is evident, from what ha- lcen said, that the best 

 way of preparing oxone is not by electric sparks.- which raise the 



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