I have only been able to find the edition of
1848-51; but in that edition, under the heading _Meteorologische
Beobachtungen_, elaborate tables of the meteorological condition of
Jakutsk are given (i. 28-49). Also, under the heading _Geothermische
Beobachtungen_, very careful information respecting the frozen earth
will be found (i. 157, &c., and 178, &c.). The point at which a
temperature of 32 deg. will be attained, is reckoned variously at from 600
to 1,000 feet below the surface.]
[Footnote 157: Reise im Russischen Reich_, i. 359; St. Petersburg,
1772.]
[Footnote 158: xxxviii. 231 (an. 1791), in an article called _Notice
mineral, de la Daourie]
[Footnote 159: L.c., p. 236.]
[Footnote 160: _Beobachtungen_, &c., 194.]
[Footnote 161: _Mundus Subterraneus_, i. 220 (i. 239, in the edition of
1678).]
[Footnote 162: 'Vidi ego in Monte Sorano cryptam veluti glacie
incrustatam, ingentibus in fornice hinc inde stiriis dependentibus, e
quibus vicini mentis accolae pocula aestivo tempore conficiunt, aquae
vinoque quae iis infunduntur refrigerandis aptissima, extremo rigore in
summas bibentium delicias commutato.
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