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Updated: May 20, 2025
And Boettger has stated that ozone is formed when ether is atomized; the fact being that the reaction he observed was due to the H2O2 always present in ether. Direct experiments with the Schoenbein ozonometer and the psychrometer gave parallel curves; whence the author regards the former as only a crude hygrometer.
The sling psychrometer as used by the U.S. Weather Bureau should, in the hands of an expert, give results making possible measurements accurate to two or three per cent. of relative humidity or forty to sixty units of vapor pressure.
The injurious effect of dry heat in inhabited rooms is quite generally known, and different methods have been suggested for moistening the air. To test the effectiveness of these methods, J. Melikow, of St. Petersburg, has estimated the quantity of moisture in the air of different rooms by means of August's psychrometer, and also tested the different methods of increasing the moisture.
They included the Mummery tent with pegs and poles, the mountain-mercurial barometer, the two Watkins aneroids, the hypsometer, a pair of Zeiss glasses, two 3A kodaks, six films, a sling psychrometer, a prismatic compass and clinometer, a Stanley pocket level, an eighty-foot red-strand mountain rope, three ice axes, a seven-foot flagpole, an American flag and a Yale flag.
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