A chapter in criticism : practical chemists and therapeutical critics.
- Condy, Henry Bollmann.
- Date:
- 1871
Licence: Public Domain Mark
Credit: A chapter in criticism : practical chemists and therapeutical critics. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
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![analyst also apparently was. It is therefore clear that your chemical adviser led you into an error, which you are unwilling frankly to admit. It would hardly be possible for any chemist worthy of the name, who had bestowed any care on the examination of Condy’s Ozonised Water, to describe it otherwise than as a solution of permanganate of lime. Your analyst, never- theless, stated it to be “ chiefly permanganate of soda, with some potash.” He now informs you that Condy’s Ozoni.scd Water is “composed of inexpcn.sive materials, and is dis- tinctly inferior in oxidizing power to pure permanganate of potash.” In so doing he exhibits his want of knowledge of the process for obtaining permanganate of lime, as well iis of the constitution of that salt. Being produced through the pure potash salt, permanganate of lime is com- paratively expensive, and having an atomic constitution richer in permanganic acid,* it must also be a more powerful oxidizer than permanganate of potash. The lime salt being, ■ moreover, less stable than the potash one, acts more rapidly, ' and, on account of its comparative tastelessness, can be used ] by fastidious persons, to whom the potash salt is repugnant. \ Such being the character of permanganate of lime, it is obvious that Oondy's Ozonised Water cannot be inferior in oxidizing power to permanganate of potash (in equivalent solution), which is the least rich in oxygen of all the alkaline permanganates. Yet this is w'hat you have permitted your- self nnretiectingly to assert! But what else could be ex- pected ? It is a complete reversal of the means whereby information is usually acquired, for individuals unacquainted with some particular line of observation, to inaugurate their noviciate by undertaking to teach those who have for years made it their study. * I’erraanganato of limo cont-iins eighty-throo per cent, of per- manganic acid, whereas permanganate of potasli possesses only sixty- seven per cent. Their formula!, according to modem notation, h| a» ^ follows:— Peraianganate of lime, CAMn jOk. IVrmanganato of p<itiish, K'.Mn .jO,.,.](https://iiif.wellcomecollection.org/image/b22308775_0022.jp2/full/800%2C/0/default.jpg)
