DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.11637#0381
AND LOWER EGYPT. 349
It is difficult, and even impossible, for a traveller
to make an uninterrupted series of meteorological
observations, which require much attention even
in a sedentary man : yet I availed myself of the
short stay I made at Cairo, and at Rossetta, to
mark with precision the temperature of the air, the
state of the weather, and the winds, which 1 ob-
served several times in a day. If observations of
this kind be of any utility, it is chiefly when they
are made in foreign countries, of the climate and
state of vegetation in which they convey informa-
tion. It need not be said, that this knowledge leads
to much more, both physical and moral. These
considerations, and the certainty, that few persons
have made meteorological observations in the same
places, have determined me to give the fragments
here offered to the public. Though they are of
little extent, and not in one continued series, they
will serve hereafter to complete the natural history
of the climate of Egypt; and such, I must repeat,
are all that can be expected from a traveller.
For these observations I used mercurial thermo-
meters : one, constructed by Cappi and Mossi,
philosophical instrument makers to the Academy
of Sciences at Paris, was graduated on one side
according to the scale of Fahrenheit, on the other
according to that of De Luc. The other thermo-
meter, made by Assier Perica, was graduated
according
It is difficult, and even impossible, for a traveller
to make an uninterrupted series of meteorological
observations, which require much attention even
in a sedentary man : yet I availed myself of the
short stay I made at Cairo, and at Rossetta, to
mark with precision the temperature of the air, the
state of the weather, and the winds, which 1 ob-
served several times in a day. If observations of
this kind be of any utility, it is chiefly when they
are made in foreign countries, of the climate and
state of vegetation in which they convey informa-
tion. It need not be said, that this knowledge leads
to much more, both physical and moral. These
considerations, and the certainty, that few persons
have made meteorological observations in the same
places, have determined me to give the fragments
here offered to the public. Though they are of
little extent, and not in one continued series, they
will serve hereafter to complete the natural history
of the climate of Egypt; and such, I must repeat,
are all that can be expected from a traveller.
For these observations I used mercurial thermo-
meters : one, constructed by Cappi and Mossi,
philosophical instrument makers to the Academy
of Sciences at Paris, was graduated on one side
according to the scale of Fahrenheit, on the other
according to that of De Luc. The other thermo-
meter, made by Assier Perica, was graduated
according