1other sand, and
scattered far and wide in different directions, or they
sink down into the depths of the sea. For the same reasons, the sands of
lakes can very rarely be washed successfully, even though the streams rising
from the mountains pour their whole volume of water into them. The
particles of metals and gems from the springs are very rarely carried into the
marshes, which are generally in level and open places. Therefore, the
miner, in the first place, washes the sand of the spring, then of the stream
which flows from it, then finally, that of the river into which the stream
discharges. It is not worth the trouble to wash the sands of a large
river which is on a level plain at a distance from the mountains. Where
several springs carrying metals discharge their waters into one river, there
is more hope of productive results from washing. The miner does not
neglect even the sands of the streams in which excavated ores have been
washed.
sink down into the depths of the sea. For the same reasons, the sands of
lakes can very rarely be washed successfully, even though the streams rising
from the mountains pour their whole volume of water into them. The
particles of metals and gems from the springs are very rarely carried into the
marshes, which are generally in level and open places. Therefore, the
miner, in the first place, washes the sand of the spring, then of the stream
which flows from it, then finally, that of the river into which the stream
discharges. It is not worth the trouble to wash the sands of a large
river which is on a level plain at a distance from the mountains. Where
several springs carrying metals discharge their waters into one river, there
is more hope of productive results from washing. The miner does not
neglect even the sands of the streams in which excavated ores have been
washed.
The waters of springs taste according to the juice they contain, and
they differ greatly in this respect. There are six kinds of these tastes which
the worker14 especially observes and examines; there is the salty kind,
which shows that salt may be obtained by evaporation; the nitrous, which
indicates soda; the aluminous kind, which indicates alum; the vitrioline,
which indicates vitriol; the sulphurous kind, which indicates sulphur;
and as for the bituminous juice, out of which bitumen is melted down, the
colour itself proclaims it to the worker who is evaporating it. The sea
water however, is similar to that of salt springs, and may be drawn into
low-lying pits, and, evaporated by the heat of the sun, changes of
itself into salt; similarly the water of some salt-lakes turns to salt when dried
by the heat of summer. Therefore an industrious and diligent man observes
and makes use of these things and thus contributes something to the
common welfare.
they differ greatly in this respect. There are six kinds of these tastes which
the worker14 especially observes and examines; there is the salty kind,
which shows that salt may be obtained by evaporation; the nitrous, which
indicates soda; the aluminous kind, which indicates alum; the vitrioline,
which indicates vitriol; the sulphurous kind, which indicates sulphur;
and as for the bituminous juice, out of which bitumen is melted down, the
colour itself proclaims it to the worker who is evaporating it. The sea
water however, is similar to that of salt springs, and may be drawn into
low-lying pits, and, evaporated by the heat of the sun, changes of
itself into salt; similarly the water of some salt-lakes turns to salt when dried
by the heat of summer. Therefore an industrious and diligent man observes
and makes use of these things and thus contributes something to the
common welfare.
The strength of the sea condenses the liquid bitumen which flows into
it from hidden springs, into amber and jet, as I have described already in
my books “De Subterraneorum Ortu et Causis”15. The sea, with certain
it from hidden springs, into amber and jet, as I have described already in
my books “De Subterraneorum Ortu et Causis”15. The sea, with certain