» <^7 
14$ Sir George Shuckburgh Evelyn’s Endeavours 
(§. 13.) Now the three foregoing mean measures of the side 
fu r « 
JJ’%705%- /24 • /y??) / fert of the cube, multiplied into each other, will give = 124,18917 
& Qrr cubic inches, for the contents of the brass cube ; which must be 
very near the truth ; for, if not, let us suppose the error, in ta- 
//24‘ia e b-c = 4 y 8(}203 2 Vc king each of these measurements, to be half a thousandth of an 
inch, which is much greater than is probable, viz. = part 
of the side of the cube; and let us suppose each of these errors 
to lie the same way, which is also very improbable ; in that 
case, the error in determining the solid content would be only 
of the whole; in the above instance, about 0,03 cubic inch; 
but, more probably, the error does not amount to half this 
quantity. 
(§. 14.) Examination of the Cylinder. 
The micrometer and microscope of the divided scale (Tab. V. 
fig. 1.) being removed till their cross wires were four inches 
distant, viz. from 54 inches to 58 inches, and the thermo- 
meter at 6 2 0 , I observed, of the end or base of the cylinder. 
No, 1. 
"Mo 
solicitous to obtain a true figure, than the exact size; neither of which however were 
very important, as both were to be proved by the mode I have adopted. What was 
important, was to have the sides true planes ; and these were examined, as I am in- 
formed, by the reflected image of the moon, seen through a large telescope, the focus 
of which would be altered, if the surface were either hollow or convex. 
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