Pyramid of above &longs;ix Furlongs high, rai&longs;ed a <lb/>
Mound of Earth all the Way up along with <lb/>
the Building, by which he carried up tho&longs;e <lb/>
huge Stones into their Places. <emph type="italics"/>Herodotus<emph.end type="italics"/> writes <lb/>
that <emph type="italics"/>Cheops,<emph.end type="italics"/> the Son of <emph type="italics"/>Rhamp&longs;inites,<emph.end type="italics"/> in the <lb/>
building of that Pyramid which employed an <lb/>
hundred thou&longs;and Men for many Years, left <lb/>
Steps on the Out&longs;ide of it, by means of which <lb/>
the large&longs;t Stones might by proper Engines, be <lb/>
rai&longs;ed up into their Places without having Oc<lb/>
ca&longs;ion for very long Timbers. </s> <s>We read too <lb/>
of Architraves of va&longs;t Stones being laid upon <lb/>
huge Columns in the following Manner: Un<lb/>
der the Middle of the Architrave they &longs;et two <lb/>
Bearers acro&longs;s, pretty near each other. </s> <s>Then <lb/>
they loaded one End of the Architraves with a <lb/>
great Number of Baskets full of Sand, the <lb/>
Weight of which rai&longs;ed up the other End, on <lb/>
which there were no Baskets, and one of the <lb/>
Bearers was left without any Weight upon it: <lb/>
Then removing the Baskets to the other End <lb/>
&longs;o rai&longs;ed up, and putting under &longs;ome higher <lb/>
Bearers in the Room of that which was left <lb/>
without Weight, the Stone by little and little <lb/>
ro&longs;e up as it were of its own accord. </s> <s>The&longs;e <lb/>
Things which we have here briefly collect<lb/>
ed together, we leave to be more clearly <lb/>
learnt from the Authors them&longs;elves. </s> <s>But <lb/>
the Method of this Treati&longs;e requires, that we <lb/>
&longs;hould &longs;peak &longs;uccinctly of &longs;ome few Things <lb/>
that make to our Purpo&longs;e. </s> <s>I &longs;hall not wa&longs;te <lb/>
Time in explaining any &longs;uch curious Principles, <lb/>
as that it is the Nature of all heavy Bodies to <lb/>
pre&longs;s continually downwards, and ob&longs;tinately <lb/>
to &longs;eek the lowe&longs;t Place; that they make the <lb/>
greate&longs;t Re&longs;i&longs;tance they are able again&longs;t being <lb/>
rai&longs;ed aloft, and never change their Place, but <lb/>
after the &longs;toute&longs;t Conflict, being either over<lb/>
come by &longs;ome greater Weight or &longs;ome more <lb/>
powerful contrary Force. </s> <s>Nor &longs;hall I &longs;tand to <lb/>
ob&longs;erve that Motions are various, from high to <lb/>
low or from low to high, directly, or about a <lb/>
Curve; and that &longs;ome Things are carried, &longs;ome <lb/>
drawn, &longs;ome pu&longs;hed on, and the like; of <lb/>
which Enquiries we &longs;hall treat more copiou&longs;ly <lb/>
in another Place. </s> <s>This we may lay down for <lb/>
certain, that a Weight is never moved with &longs;o <lb/>
much Ea&longs;e as it is downwards; becau&longs;e it then <lb/>
moves it&longs;elf, nor ever with more Difficulty, <lb/>
than upwards; becau&longs;e it naturally re&longs;i&longs;ts that <lb/>
Direction; and that there is a Kind of middle <lb/>
Motion between the&longs;e two, which perhaps par<lb/>
takes &longs;omewhat of the Nature of both the <lb/>
others, ina&longs;much as it neither moves of it&longs;elf, <lb/>
nor of it&longs;elf re&longs;i&longs;ts, as when a Weight is drawn <lb/>
upon an even Plain, free from all Rubs. </s> <s>All <lb/>
other Motions are ea&longs;y or difficult in Proporti<lb/>
on as they approach to either of the preceding. <lb/>
</s> <s>And indeed Nature her&longs;elf &longs;eems in a good <lb/>
Mea&longs;ure to have &longs;hewn us in what Manner <lb/>
great Weights are to be moved: for we may <lb/>
ob&longs;erve, that if any con&longs;iderable Weight is laid <lb/>
upon a Column &longs;tanding upright, the lea&longs;t <lb/>
Shove will pu&longs;h it off, and when once it be<lb/>
gins to fall, hardly any Force is &longs;ufficient to <lb/>
&longs;top it. </s> <s>We may al&longs;o ob&longs;erve, that any round <lb/>
Column, or Wheel, or any other Body that <lb/>
turns about, is very ea&longs;ily moved, and very <lb/>
hard to &longs;top when once it is &longs;et on going; and <lb/>
if it is draged along without rowling, it does <lb/>
not move with half the Ea&longs;e. </s> <s>We further &longs;ee, <lb/>
that the va&longs;t Weight of a Ship may be moved <lb/>
upon a &longs;tanding Water with a very &longs;mall Force, <lb/>
if you keep pulling continually; but if you <lb/>
&longs;trike it with ever &longs;o great a Blow &longs;uddenly, it <lb/>
will not &longs;tir an Inch: On the Contrary, &longs;ome <lb/>
Things will move with a &longs;udden Blow or a fu<lb/>
rious Pu&longs;h, which could not otherwi&longs;e be &longs;tirred <lb/>
without a mighty Force or huge Engines. <lb/>
</s> <s>Upon Ice too the greate&longs;t Weights make but a <lb/>
&longs;mall Re&longs;i&longs;tance, again&longs;t one that tries to draw <lb/>
them. </s> <s>We likewi&longs;e &longs;ee that any Weight which <lb/>
hangs upon a long Rope, is very ea&longs;ily moved <lb/>
as far as a certain Point; but not &longs;o ea&longs;ily, fur<lb/>
ther. </s> <s>The Con&longs;ideration of the Rea&longs;ons of <lb/>
the&longs;e Things, and the Imitation of them, may <lb/>
be very u&longs;eful to our Purpo&longs;e; and therefore <lb/>
we &longs;hall briefly treat of them here. </s> <s>The Keel <lb/>
or Bottom of any Weight, that is to be drawn <lb/>
along, &longs;hould be even and &longs;olid; and the <lb/>
Broader it is, the le&longs;s it will plough up the <lb/>
Ground all the Way under it, but then the <lb/>
Thinner it is, it will &longs;lip along the Quicker, <lb/>
only it will make the deeper Furrows, and be <lb/>
apter to &longs;tick: If there are any Angles or Ine<lb/>
qualities in the Bottom of the Weight, it will <lb/>
u&longs;e them as Claws to fa&longs;ten it&longs;elf in the Plain, <lb/>
and to re&longs;i&longs;t its own Motion. </s> <s>If the Plain be <lb/>
&longs;mooth, &longs;ound, even, hard, not ri&longs;ing or &longs;ink<lb/>
ing on any Side, the Weight will have nothing <lb/>
to hinder its Motion, or to make it re&longs;u&longs;e to <lb/>
obey, but its own natural Love of Re&longs;t, which <lb/>
makes it lazy and unwilling to be moved. <lb/>
</s> <s>Perhaps it was from a Con&longs;ideration of the&longs;e <lb/>
Things, and from a deeper Examination of the <lb/>
Particulars we have here mentioned, and <emph type="italics"/>Ar<lb/>
chimedes<emph.end type="italics"/> was induced to &longs;ay, that if he had on<lb/>
ly a Ba&longs;is for &longs;o immen&longs;e a Weight, he would <lb/>
not doubt to turn the World it&longs;elf about. </s> <s>The <lb/>
Preparation of the Bottom of the Weight and