264 Prof. Brandes on the Depressionof .. [Ocr. 
instrument was observed with precision at the moment of its 
greatest descent, although this is necessary in order to obtain 
correct results. 
The observations of which I here communicate the results 
were all made on the Continent ; I have not noticed those which 
have been made in England, because there are not sufficient 
details of them for the formation of a table of what has taken 
place there ; I hope, however, that I shall be able to give the 
results of the English observations at another opportunity. 
a 
Observations for determining the Time at which the Barometer 
was lowest in different Parts of the Continent. 
At La Chapelle, near Dieppe, the minimum was observed by 
M. Breanté at 3" 30’ in the morning. 
At Troyes, at 3", 
At Viviers, in the south of France, by M. Flaugergues, at 3°. 
At Boulogne Sur Mer, by M. Gambant, at 5» 9’, 
At Triers, at 5°. 
At St. Gallen, in Swisserland, by M. Meyer, before 5". 
At Regensburg, by M. Heinrich, at 7". 
At Strasburg, by M. Herrenschneidern, at 75 30’. 
At, Middleburg and at Utrecht, at 9" 30’. 
At Padua, nearly at the same time. 
At Prague, by M. Hallasohka, at 10. 
At Schwelm, near Elberfeld, on the Lower Rhine, by M. Cas- 
tringius, at 1” at noon. 
At Hanover and Gottingen, by MM. Luthmer and Harding, 
at 12°. 
At Gotha, Jena, Halle, and Leipsic, according to the observa- 
tions of MM. Kries, Posselt, Winkler, and Schmiedel, at 12" 
or 1°, 
At Altona, by M. Schumacher, at 2” 38’. 
At Breslau, and at several other places in Silesia, at 2" or 3" 
in the afternoon. 
At Cracow, by M. Markiewioz, at 3". 
At Apenrade and Fredericksvark in Denmark, at 5" or 6”. 
At Dantzic, by M. Kleefeld, at 9" or 10" in the evening. 
At Abo, in Finland, on the 26th of Dec. in the morning. 
At Dorpat, in the same day, at noon. 
At Petersburg, in the evening of the 26th, and in the morn- 
ing of the following day. 
We may conclude with sufficient certainty from the above 
statement, that if we imagine a line drawn through those places 
where the barometer was at the minimum at the same moment, 
that line passed, on the 25th of December, 
At 3 in the morning, through Dieppe, Troyes, and Viviers. 
Before 5, through Swisserland. 
At 5, through Boulogne and Triers. 
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