Weights and Measures^ &c.

69

He finds the fide of the Base to consist of 380 such Cubits, andthat of a Tombstone of four, nearly. Mr. Greaves has given thedimensions of so many parts of the Pyramid, that anyCubit whatsoever would probably answer to one or two of themnearly in Integers. So the Strength of the Bishop’s argument de-rpends chiefly on 380 being a remarkable number, such as an Ar-would chuse for the dimension of the Principal part of his. But why it should be thought so remarkable for its Square144400, does not appear, or even so fit for the Side of the Py-ramid, is not so obvious, since it consists of zoo and 80 over.

I will suppose rather that the ArchiteB choose 400 Cubits for theSide of the Base ; this is properly a round number, and the Cubitfrom thence deduced will be found to . agree better with the otherDimensions than the present Cairo Cubit.

Divide 69 ; the number of feet by 400, the quotient will givethe ancient Ægyptian Cubit equal to 1 ,7 325 Feet: which is short-er than the Bifliop’s: and is compared as follows with some of themost remarkable dimensions. Mr. Greaves mentions three Squareholes, each in breadth exactly 3,463 Feet: this number dividedby the Cubit 1,7 3 2.5 quotes 1,9988, this differs only 11ten thousandth parts from 2, which therefore I suppose was the num-ber of Cubits design’d. Now dividing that number 3,46 3. bythe Bifliop’s Cubit 1,8x4, the quotient 1,898 differs above 1 tenthfrom 2.

The Breadth of a Gallery in the Pyramid is 6,8 7 Feet, which .divided by 1,73x5 gives 3,96, which differs from 2 but by 4hundredth parts: but being divided by 1,8x4 gives 3,76, whichdiffers 14 hundredth parts from 4 Cubits.

The Breadth of two Banks of polish’d stone is 1,717 Feet. Thedifference of this from 1,7 3x5 is about 1 5 thousandth parts, butdifference from 1,8x4 is one tenth of a Foot.

The Breadth of a Way between those banks is 3,436, which .

differs from the double of 1,7 zr 5, or 3,465 by z hundredth parts

of