Part, §

1 Exp    | preventing the air -- which presses with a power equal to a
2 Exp    |  other iron pin in its turn presses the nether part of the balance,
3 Exp    |  rarefied through the heat, presses against the bottom of the
4 Exp    |   as much as the atmosphere presses on the piston from above.~ ~
5   I,  1|    of the atmosphere, which presses in all directions and on
6   I,  3|      To what extent the air presses upon a vessel which is void