on of
that magnet.
When the stone is put parallel to the plane of the horizon, the island
stands still; for in that case the extremities of it, being at equal
distance from the earth, act with equal force, the one in drawing
downwards, the other in pushing upwards, and consequently no motion can
ensue.
This loadstone is under the care of certain astronomers, who, from time
to time, give it such positions as the monarch directs. They spend the
greatest part of their lives in observing the celestial bodies, which
they do by the assistance of glasses, far excelling ours in goodness.
For, although their largest telescopes do not exceed three feet, they
magnify much more than those of a hundred with us, and show the stars
with greater clearness. This advantage has enabled them to extend their
discoveries much further than our astronomers in Europe; for they have
made a catalogue of ten thousand fixed stars, whereas the largest of ours
do not contain above one third part of that number. They have likewise
discovered two lesser stars, or satellites, which revolve about Mars;
whereof the innermost is distant from the centre of the primary planet
exactly three of his diameters, and the outermost, five; the former
revolves in the space of ten hours, and the latter in twenty-one and a
half; so that the squares of their periodical times are very near in the
same proportion with the cubes of their distance from the centre of Mars;
which evidently shows them to be governed by the same law of gravitation
that influences the other heavenly bodies.
They have observed ninety-three different comets, and settled their
periods with great exactness. If this be true (and they affirm it with
great confidence) it is much to be wished, that their observations were
made public, whereby the theory of comets, which at present is very lame
and defective, might be brought to the same perfection with other arts of
astronomy.
The king would be the most absolute prince in the universe, if he could
but prevail on a ministry to join with him; but these having their
estates below on the continent, and considering that the office of a
favourite has a very uncertain tenure, would never consent to the
enslaving of their country.
If any town should engage in rebellion or mutiny, fall into violent
factions, or refuse to pay the usual tribute, the king has two methods of
reducing them to obedience. The first and the mildest course is, by
keeping
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