FO-From Benjamin Franklin to John Canton, 29 May 1765.md

FO-From Benjamin Franklin to John Canton, 29 May 1765

2 reprints from 1765-05-29 to 1768-10-01

FO-From Benjamin Franklin to John Canton, 29 May 1765

by Franklin, Benjamin

From unknown source

1765-05-29

. It is compos’d of a Series of Numbers from 12 to 75 inclusive, divided in 8 concentric Circles of Numbers, and rang’d in 8 Radii of Numbers, with the Number 12 in the Center, which Number, like the Center, is common to all the Circles and to all the Radii. The Numbers are so dispos’d, as that all the Numbers in any one of the Circles, added together, make, with the central Number, just 360, the Number of Degrees in a Circle. The Numbers in each Radius also, with the central Number, make just 360. Also Half of any of the said 8 Circles, taken above or under the horizontal double Line with Half the Central Number,

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From The Gentleman's Magazine 1731-1907

1768-10-01 · London, England

‘THIS circle, (fig. 1.) is compofed of numbers, from 12 to 75 inclutive, divided into eight concentric circular fpaces, and ranged in eight radii of numbers, with the number 12 in the centre ; which number, like the center, is common to ali thefe circular {paces, and to all the radii. The numbers are fo placed, that the fum of all thofe in either of the con- centric circular fpaces above mentioned, together with the central number 12, make 3605 equal to the number of degrees in a circle. ‘The numbers in each radius alfo, to- gether with tke central number 12, make juft 360. The numbers in half of auy of the above circular fpaces, taken either above or below the double horizontal line, with half the central number 12,

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