408 
Scientific Intelligence. — Geography. 
driven by a boisterous wind coming from the north-west, pro- 
ceeded to Lillers, a town three leagues distant from Lambre, 
where it broke and uprooted nearly two hundred trees in the 
beautiful grounds of M. Defoulers; after which it was dissipated 
in ito turn. At three o'clock, the weather was calm, the sky al- 
most entirely clear, and the thunder, which had been heard from 
all points of the horizon, ended at the same time with the whirl- 
wind. The evening and night were very beautiful . — Bulletin 
Universe l 
GEOGRAPHY. 
5. Height of Mount /Etna . — Captain Smyth, in his lately 
published £i Memoir of Sicily," informs us, that, according to 
his measurements, Mount /Etna is 10,874 feet above the level 
of the sea, and not 12,000 feet, the height usually given to it. 
Professor Schouw, in his 66 L'ultima cruzione dell 'Etna, des- 
crita in una lettera diretta al Cavaliere J. J. Alberto de Schoen- 
berg, dal Dr J. Schouw, Giornale Enciclopedico, Agosto 1819, r 
gives nearly the same height to the mountain ; it being, accord- 
ing to his measurement, 10,484 French feet above the level of 
the sea, 
HYDROGRAPHY. 
6. Observations with regard to the presumed Diminution of 
the Level of the Baltic Sea, by N. Bruncrona ; with Remarks 
on the same subject , by C. P. Hollstrom . — The phenomenon of 
the diminution of the water, or, to speak more correctly, of the 
lowering of the level of the sea in the Baltic, has long engaged 
the attention of Swedish naturalists, some of whom are satisfied 
as to its existence, while others deny it altogether. The latter 
have, on their side, the difficulty of admitting that a body of 
water, internal, it is true, but communicating with the ocean by 
three openings, could have any other level than that of the ocean 
itself ; but, to this objection, their opponents reply by facts, that 
is, by the comparison of the present level of the Baltic, with that 
which it must have had at periods more or less remote, judging 
by the marks impressed either by the operation of natural causes, 
or by the hand of man, upon the rocks which project from the 
midst of the waters. A circumstance not less remarkable than 
the phenomenon itself, is, that the fall of the level seems to have 
