. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 388 EECENT PEOGEESS IN PHYSICS. SchonLein has the great credit of having restored this question to the current of scientific activity. He has shown that the electrical odor comes from a peculiar gas, produced during the electrical emission, which he calls ozone. He has investigated the properties of this sub- stance for years with the greatest zeal, and although, as yet, it has not been obtained in an isolated state, many of its important c
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 388 EECENT PEOGEESS IN PHYSICS. SchonLein has the great credit of having restored this question to the current of scientific activity. He has shown that the electrical odor comes from a peculiar gas, produced during the electrical emission, which he calls ozone. He has investigated the properties of this sub- stance for years with the greatest zeal, and although, as yet, it has not been obtained in an isolated state, many of its important chemical and physical relations have been ascertained, and further researches on the subject promise most interesting discoveries in the field of chemistry. The first memoir of Schonbein on ozone is in the ^^ der Mundieuer ; It is also printed in Poggepdorf's Anna- Itn. Bd. L. p. 616. A small pamphlet with the title, " On the pi^oduction of ozone in the chemical ivay," evidently by Schonbein, was published in 1844 by Schonbein & Schweighaiiser, in Basel. The most important treatises on this subject which then followed are to be found in Poggendorfs Annalen, by reference to the index of names, appended to the LXXV volume. In these papers the historical course of Schonbein's discoveries may be followed out. I will omit this historical investigation on account of its great extent, and I will not refer to the contents of the separate paj)ers, but describe the most essential experiments which show the nature and most important relations of ozone, in the order in which Professor Schonbein had the goodness to show them to me in the year 1849, and, passing over their earlier phases, present his views upon its nature as now held, after many years investigation. The prime conductor of an electrical machine being provided at the Fig. 82. end with a round-pointed wire, a, b, about 1 line in diameter, (fig. 82.) When the machine is turned the pecul
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