to ascertain a Standard of Weight and Measure . 149 
grains 
4 1Q - 
4 1 3 > 4 ° 
9 e 5>74 
To which, add the weight of the common 
pan with the silk lines, on the left arm 
of the beam, and marked with x, the > 
common right-hand pan having been 
removed - - 
And the whole weight of the pan or ap-” 
paratus for weighing the cube in air, > - - — 968,49 
becomes J 
(§.17.) The counterpoise to the pan or J oz grg 
scale for weighing the cylinder in air, >= 1 72,34 = 352,34 
was found - 
To, which, add the weight of the com- 
mon pan on the left arm, as before 
And the whole weight of the pan or scale"! 
for weighing the cylinder in air, be- > 
comes - - - J 
Note, in the preceding and such like experiments, the com- 
mon right-hand scale being removed, and the left-hand scale 
being always used, and always the same weight, viz. 413,40 
grains, when either the cube, or cylinder, or any large body, is 
weighed, notice need only be taken of the counterpoise weights, 
viz. 555,02 grains, or 552,34 grains, respectively ; and these 
are to be deducted from the general amount of all the weights 
in the left-hand scale, marked x ; but it certainly would have 
been more convenient to have had single weights, ready ad- 
justed, for these counterpoises, both in air and in water. These, 
though at first omitted, have since been supplied. 
(§. 18.) The counterpoise to the scale for the cube, ] & rains - 
in distilled water, with the heat of 6i° - J 
To this, add the weight of the common scale, as before = 413,40 
