A FEW: FIGURES, 121
so as to sink, to 1,51374% tons, instead of 31,5073. The
increase will consequently only be 634% tons.”
“Ts that all?”
“Yes, and the calculation can be easily verified.
Ihave supplementary reservoirs capable of holding 100
tons. So.I can descend to a very considerable depth.
When I wish to come up again to the surface, I have only
to eject the water in all the reservoirs, and the JVauti/us
will float with one-tenth emerged.”
I could not object to these figures.
“T admit your calculations, captain,” I replied, “and
it would be very bad taste to dispute them, since ex-
perience has proved them right every day. But I confess
to a difficulty.”
“ What is that 2”
“When you are at a depth of 1,000 yards, the
sides of the Vautilus support a pressure of 100
atmospheres. So then, at the time you employ your
reservoirs for the purpose of rising to the surface, you
must overcome by means of your pumps this pressure of
too atmospheres which is 1,500 lbs. for a square inch.
Such a power——” :
“Electricity alone can give me,” interrupted Captain
Nemo. “I repeat that the dynamic power of my engines
is almost infinite. The pumps have enormous power.
For instance, look at the columns of water thrown like a
torrent upon the deck of the 4éraham Lincoln. Besides,
I do not fill my supplementary reservoirs, except to reach
moderate depths. But when the fancy seizes me to visit
the very bottom of the sea, or two or three leagues below
the surface, I employ other more complicated but not
less certain measures.”