the cube , cylinder , &c. used by the late Sir G. S. Evelyn. 319 
The microscopes were attached to a strong frame of well 
seasoned wood, and were transferred from the dots to the 
scale at each reading. 
Measurement of the cube. 
The brass pieces being properly placed, the excess of 
the distance between the dots and 5 inches, taken upon the 
standard scale between 27 and 32, was measured by the 
micrometer. This being added to 5 inches, and ,0296582 
subtracted, we have the length of the side of the cube. 
Cube. 
Side 1. (the top.) j 
Reading of the 
Micrometer at the 
Difference. 
Distance 
between the 
Length 
of the side of the 
Mean. 
Dots in Inches. 
Cube in Inches. 
Scale. 
Dots. 
a to b 
22 
217 
a to c 
1 95 
5,0190242 
4,9893660 
- 
22 
217 
c to d 
>95 
5,0190242 
5,0193169 
4,9893660 
4,9897687 
> 4>98935 
22 
220 
b to d 
198 
22 
212 
190 
5,0185364 
4,9888782 
J 
Side 2. (the bottom. ) 
a to b 
22 
220 ,6 
a to c 
198,6 
5> 01 93754 
4,9897172 
23 
221 
c to d 
198 
5,0193169 
4,9896587 
>• 4»98935 
22 
215 
b to d 
1 93 
5,0188291 
4,9891709 
17,8 
207,5 
189,7 
5,0185071 
4,9888489 
J 
Height from side 1 
to side 2. 
a to a 
18,2 
21 1 
b to b 
192,8 
5,0188095 
4,98915* 3 
19 
210 
191 
5,0186340 
4,9889758 
c to c 
4,9893660 
l. 4*989 >* 
»9 
214 
d to d 
>95 
5,0190242 
18 
209 
1 9 1 
5,0186340 
4,9889768 
Taking the mean of the above three means for the true 
length of the side of the cube, we have its content 124,1969 
inches. 
