878 PKOF. W. H. MILLER ON THE CONSTRUCTION OF THE NEW STANDARD POUND. 
volame of a grain of mercury at 16°. The temperature of the mercury in the stereo- 
meter was determined by a thermometer placed in the jar which received the mer- 
cury that escaped on opening the stopcock at the lower end of the tube. Let t 
denote this temperature. The barometer was suspended near the stereometer, and 
was presumed to have the same temperature. The height of the column of mercury 
in it, corrected for its constant error, but not reduced to 0°, will be denoted by h. 
dB in cup. 
<=16-92, /i= 750-24. 
PM. 
PC. 
136-43 
518-10 
136-60 
518-80 
136-40 
519-10 
136-40 
519-20 
136-35 
518-85 
136-40 
519-10 
136-25 
518-20 
136-45 
518-85 
136-41 
518-77 
CM= 382-36 
A-CM= 376-89 
Vol. PM= 4546-56 
Vol. cup— vol. ^=4481-4 
^ in cup. 
<=17-1,4=759-07. 
PM. 
PC. 
136-35 
529-55 
136-15 
530-50 
136-00 
531-00 
136-20 
530-65 
136-45 
531-50 
136-30 
531-30 
136-00 
530-50 
135-90 
530-15 
136-10 
530-70 
136-20 
531-10 
136-65 
531-95 
136-40 
531-70 
136-22 
530-88 
CM= 394-66 
4— CM= 364-41 
Vol. PM=4540-2 
Vol. cup— Vol. ^=4192-2 
® in cup. 
<=17*3, 4=758-65. 
PM. 
PC. 
136-10 
517*90 
136-20 
518-55 
136-10 
518-40 
136-05 
517-90 
136-45 
518-90 
136-05 
517*40 
136-25 
517*75 
136-35 
518-60 
136-20 
518-15 
139-65 
519*30 
136-23 
518-28 
CM= 
: 382-05 
4-CM= 
: 376-60 
Vol. PM= 
;4540-7 
Vol. cup — 
Vol. €=4475' 
Hence, at 17°'l, vol. cup — vol. (0 = volume of 4478*65 grains of mercury at 16°, 
and vol. cup — vol. volume of 4192*2 grains of mercury at 16°. Therefore, at 
17°’lj vol. 91— vol. (0 = volume of 286*45 grains of mercury at 16°. 
v^—vdB in vol. of a grain of mercury at 16° ... 286-45 2-45705 
A mercury at 0°: A mercury at 16° 1-00287 0-00124 
2-45829 
13-596 1-13341 
1-32488 
0-00020 
21-119 1-32468 
A mercury at 0° : A water at 4° 
v^-v<!B at 17°*1 
A platinum at 0°: A platinum at 17°-1 
v^—vdB at 0° 
fVeighing of (0 in water. 
The kilogramme, after having been washed with alcohol, was suspended from the 
right-hand pan of the balance, by a loop of platinum wire wound round it, so as to 
hang in the middle of the jar destined to receive the water in which it was to be 
weighed. In order to prevent the formation of air-bubbles, the water was poured 
through a funnel having a very small opening inserted into the upper end of a 
