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| 1 | 306 | 613 | 919 | 1225 |
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This proposition is clearly proved by reason confirmed by
experiment. Supposing that through a channel one mile wide there
flows one mile in length of water; where the river is five miles
wide each of the 5 square miles will require 1/5 of itself to be
equal to the square mile of water required in the sea, and where the
river is 3 miles wide each of these square miles will require the
third of its volume to make up the amount of the square mile of the
narrow part; as is demonstrated in f g h at the mile marked n.
[
Footnote: In the place marked A in the diagram Mare Mediterano
Mediterranean Sea) is written in the original. And at B, stretto
(
di Spugna (straits of Spain, i.e. Gibraltar). Compare No. 960.]
1
084.
WHY THE CURRENT OF GIBRALTAR IS ALWAYS GREATER TO THE WEST THAN
TO
THE EAST.
The reason is that if you put together the mouths of the rivers
which discharge into the Mediterranean sea, you would find the sum
of water to be larger than that which this sea pours through the
straits into the ocean. You see Africa discharging its rivers that
run northwards into this sea, and among them the Nile which runs
through 3000 miles of Africa; there is also the Bagrada river and
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