DOI Page / Citation link:
https://doi.org/10.11588/diglit.6094#0250
SICILY AND MALTA. 22;
three to the third, and so on : But surely
the weight of the air diminish.es in a much
greater proportion.
Boguer takes the difference of the loga-
rithms of the height of the barometer in
lines (supposing these logarithms to consist
only of five figures); from this difference
he takes away a 30th part, and what re-
mains he supposes to be the difference of
elevation. I do not recollect his reason for
this supposition ; but the rule seems to be
still more erroneous than the other, and
has been entirely laid aside. I am told,,
that accurate experiments have been made
at Geneva, to establisfi the mensuration
with the barometer; but I have not yet
been able to procure them. Mr. de la Hire
allows twelve toises, four feet for the line
of mercury : And Picart, one of the mod
exact of the French academicians, four-
teen toises, or about ninety English feet.
Height
three to the third, and so on : But surely
the weight of the air diminish.es in a much
greater proportion.
Boguer takes the difference of the loga-
rithms of the height of the barometer in
lines (supposing these logarithms to consist
only of five figures); from this difference
he takes away a 30th part, and what re-
mains he supposes to be the difference of
elevation. I do not recollect his reason for
this supposition ; but the rule seems to be
still more erroneous than the other, and
has been entirely laid aside. I am told,,
that accurate experiments have been made
at Geneva, to establisfi the mensuration
with the barometer; but I have not yet
been able to procure them. Mr. de la Hire
allows twelve toises, four feet for the line
of mercury : And Picart, one of the mod
exact of the French academicians, four-
teen toises, or about ninety English feet.
Height