Ventura in Paris, and had obtained from
him a complete confirmation of the story told by Capt. Wade.
Another English officer, Mr. Boileau, in a work published in 1840,
and Dr. MacGregor, in his medical topography of Lodhiana, narrate two
analogous exhumations that they separately witnessed. The question
therefore merits serious examination.--_A. de Rochas, in La Nature_.
* * * * *
Some experiments recently made by M. Olszewsky appear to show that
liquid oxygen is one of the best of refrigerants. He found that when
liquefied oxygen was allowed to vaporize under the pressure of one
atmosphere, a temperature as low as -181.4 deg. C. was produced. The
temperature fell still further when the pressure on the liquid oxygen
was reduced to nine millimeters of mercury. Though the pressure was
reduced still further to four millimeters of mercury, yet the oxygen
remained liquid. Liquefied nitrogen, when allowed to evaporate under a
pressure of sixty millimeters of mercury, gave a temperature of -214 deg.
C., only the surface of the liquid gas became opaque from incipient
solidification. Under lower pressures the nitrogen solidified,
and temperatures as low as -225 deg.
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