364 The History of Antozone [June, 
have been turned brown by ozone. The same effect pre- 
cisely is produced by peroxide of hydrogen. Is there any 
adequate explanation of these agreements short of con- 
ceding that Schonbein’s antozone is disguised peroxide of 
hydrogen ? 
But what shall we say of those numerous cases in which 
Meissner thought that a mixture of ozone and antozone 
was present, and that on removing the former, by passing 
the mixture through a solution of iodide of potassium, the 
latter went on alone, attended with its characteristic white 
cloud ? The explanation is that afforded by the experiments 
of Von Babo : when ozone decomposes potassium iodide 
solution there is formed, in addition to free iodine, iodate of 
potassium, and potassium peroxide, peroxide of hydrogen . 
If anyone doubts the adequacy of this explanation, let him 
try the following experiment Strongly ozonise some dry 
oxygen by an eledtrical ozoniser ; pass the ozonised gas 
through a sulphuric acid wash-bottle, and then allow it to 
descend upon a potassium iodide solution. The ozone will 
undergo complete absorption, the solution becoming deeply 
coloured by the liberated iodine. Resting upon the surface 
will be seen a dense white cloud. This white cloud may 
now be aspirated through many wash-bottles containing 
water, and even a solution of chromic acid, and may stand 
for hours over water before it completely disappears. But 
on examining the waters used in washing it, they will be 
found to contain peroxide of hydrogen. Apply the same 
mode of solving the other statements made by Meissner, 
remembering always that the peroxide of hydrogen which 
is formed when ozone is decomposed by an aqueous solution 
is attended by a white cloud, through which the peroxide of 
hydrogen has diffused itself,— a white cloud of such perma- 
nence that it may be transmitted through many solutions 
before undergoing absorption, — and their explanation will be 
found both natural and easy. 
In conclusion, why not make an end of the matter by 
stating that antozone is peroxide of hydrogen ? The ob- 
jection to so doing is, that along with the term antozone 
there were attached many notions which are not true of 
peroxide of hydrogen, such as its being eledtro-positive 
oxygen, that it had the power of forming peroxide of hydro- 
gen on coming into contact with water, &c.^ Finally, the 
very name antozone implies a substance in its nature the 
opposite of ozone, and supposes the existence of a theory 
to account for the difference. For these reasons I deem it 
more just to sum up the question by re-affirming the 
