
~~~~~~~~~~~~~~~080r~~~~~~~~~~~~~~~

Petard

They make them of fine substance & fine copper, which is
capable of fifty lb of powder, in the shape of a
reinforced firkin, and having made a hole even of
with the ground at the foot of a wall, with gimlets
they set the said loaded petard in that hole, with the muzzle pointing
up, which makes a large breach.


Very hard white stucco

White wax, Venice turpentine,
eggshell, & ceruse.


Fountains

If you wish to make water rise higher than its source, make a
pipe descend as in A B to B in order to give it push
to the water, then from B to C make the
pipe ascend again, which should not quite attain the height of
the source, which is represented to you by this horizontal line, then
make the pipe descend again from C to D, then raise it again,
higher than the line showing the height of the source. And do this
successively until you have reached the desired height, heeding
nonetheless that the length of the descending pipe should be
twice as long as the ascending pipe. This
cornet folded back on itself also shows you a perpetual
fountain which you can fit into some rock, pulling the water with
which it is filled by the tip marked E, by sucking &
breathing in. You can also make a watering pipe in this manner, in order
that the trussed-up length is as long as its straight pipe,
& nevertheless does not descend as far down.

