PS en IN, LE ee ee EE a ee ee 
ape cal aaa a tees 
Meissner’s Researches on Oxygen, Ozone,and Antozone. 25 
The formation of antozone in the combustion of hydrogen is 
proved, also, by the fact that HO, appears as a product. Bottger 
made the observation that the perfectly neutral water, obtained 
burning pure hydrogen in the air, liberates iodine from 
slightly acidulated solution of KI, and likewise reduces an acid- 
ulated solution of KO,Mn,O,. Béttger (and Schénbein, also, 
on learning this fact,) was inclined to attribute these reactions to 
2; but since the liquid retained these oxydizing and reducing 
qualities even after concentrating considerably at a boiling heat, 
and, moreover, gave Schdnbein a negative result on applying 
his test (KI with FeO,SO,), it was concluded by both these 
chemists that nitrite of ammonia is produced in this combustion ; 
a conclusion which they both have since extended to all instances 
of combustion. 
may be bo 
without losing its characteristic qualities; while NH ,O, NO, in 
tion. 
The formation of the antozone mist and of HO, ma 
served with any flame the same as with burning hydrogen, care 
being taken that the air which surrounds the flame, or is made 
to stream over it for the purpose of transporting these products 
into a suitable receiver, be not heated too strong y- _ The experi- 
ment succeeds easily with the alcohol-flame; butris difficult when 
a smokeless gas-flame is employed, on account of the high tem- 
perature of the latter. ~ 
The antozone produced in the vicinity of a flame is, in great 
part, destroyed again by the high temperature to which it is ex- 
posed, even when the flame is situated in the midst of a powerful 
current of air. 
When the combustion is slow or smouldering, antozone ap- 
pears in large quantities, and in presence of moisture forms the 
characteristic mist or cloud. Tobacco-smoke, according to 
Meissner, is a genuine antozone mist, though various products of 
combustion are suspended in it. When a cigar is “smoked” by 
an air-pump or aspirator, the larger share of these products of 
Am. Jour. Sc1.—Seconp Szrizs, Vou. XXXVIII, No. 112—Jury, 1864, 
4 
