EG. OZONE AND ANTOZONE. 
same in four hours; and, by repeating the process for several weeks, he was 
able to prepare as much as 20 grammes of the peroxide of silver. Ozone 
results also from the slow oxidation of pure ether, effected by the means of a 
platinum spiral heated to redness and placed in the vapor of the ether. Accord- 
ing to Schoenbein the combustion of hydrogen, carbide of hydrogen, and of 
kindred gases, produces ozone. 
The odor of ozone is so powerful that air containing only one millionth of it 
has a decided smell of the gas. Ozonized air raised to the temperature of 
482° to 572° Fahrenheit, is deprived instantly of this body. 
A very characteristic action of ozone consists in its polarizing effects upon 
the metals, particularly upon platinum, gold, and, to a less extent, edpper. An 
ozoniferous atmosphere behaves like one containing chlorine or bromine. If a 
slip of gold or platinum is immersed in an ozone atmosphere, it acquires a mega- 
tive polarity in a few seconds. When sucha slip is united with an ordinary 
one and the pair is plunged in acidulated water, a current is generated which 
acts powerfully upon the needle of the galvanometer. Antozone, also, polaxizes 
platinum negatively, but less so than ozone. 
Inthe preparation of ozone by phosphorus, an odor characterized as “ garlic” 
is first perceived. Gold or platinum, immersed in such air, is polarized post- 
tively, and this condition may remain for a considerable time if the tempera- 
ture be low. Presently, with a temperature of 53.6° to 60.8° Fahrenheit, the 
gas exchanges its “ garlic” for an ozone smell; and, at the same time, the metal, 
after quickly passing Volta’s point of indifference, acquires a negative polarity. 
The least moisture deposited upon the metal, also an elevated temperature, pre- 
vent, or, if present, destroy this polarization. It is also lost in the air gradu- 
ally, and immediately in hydrogen gas, which even communicates a positive 
polarity. 
-- Ozone is absorbed neither by water, caustic ammonia, nor baryta, sulphuric 
acid, or dry chloride of calcium. 
Schoenbein attributes many of the reactions of oxidation by the “ nascent 
state’ of the gas to the presence of ozone. 
Dr. Phipson has given many of such examples of polarization explanatory 
of the “ status nasvens’ in a prize essay which is contained in the Smithsonian 
Report for 1862. 
A paper saturated with a solution of iodine is quickly bleached in an ozone 
atmosphere; the product, however, does not react acid, and in contact with 
oxidizable bodies, such as sulphurous acid, sulphide of hydrogen, phosphorus, 
hydriodic acid, metals like zine and tin, or protoxides like those of tin or lead, 
the paper becomes brown again from iodine. 
Solutions of chlorine and bromine act in the same manner; and it is this 
fact, together with the chemical analogies existing between ozone and the 
halides, which led Schoenbein to assign to ozone a similar nature. 
In the presence of strong bases, such as hydrates of lime or potassa, the 
nitrogen of the air may be oxidized to nitre by the action of ozone. ‘Three 
thousand litres of ozonized air, agitated with milk of lime, furnish 5 grammes 
of saltpetre. Ozone liberates iodine from the iodide of potassium more freely 
in the sun than in the daylight; but when starch is present, the blue iodide of 
starch is bleached by the light. By renewed action of ozone it becomes blue 
again, and the bleaching and bluing may be repeated until the iodide of potas- 
sium is transformed completely into iodate of potassa; when ozone is no longer 
capable of producing the blue tinge. According to Baumert, the first effect 
of ozone upon this salt is the decomposition to caustic potassa and iodine, 
which react to form iodate of potassa and iodide of potassium. ‘The. ozone 
acts upon this iodide as before, until at length the halide is completely oxidized 
to iodate of potassa. 
The yellow prussiate of potassa is converted quickly into the red prussiate 
