874 PROF. W. H. MILLER ON THE CONSTRUCTION OF THE NEW STANDARD POUND. 
rSp=271‘832 as computed by means of Schumacher’s tables, butvTis 0’014 less as 
computed by Schumacher’s tables than as computed by the tables used in calculating 
vM and uPS; therefore probably ^^Sp would be 271 '846 if computed by the latter tables, 
dV=59*403, ^;PS = 330•856. Hence i/'(Sp+V) = 331*249, ^;(Sp+V) — ?;PS=0’393. 
t»(Sp+V)—yPS= volume of 0 00048 grain of air. Therefore 
Sp-]-V= PS — 0*00023 grain. 
Comparison of the Pound with the Kilogramme. 
The necessity of a new comparison of the kilogramme with English weights appears 
by the following extract from a paper by Professor Moll in the Journal of the Royal 
Institution, No. 4, 1831. “Each of the governments who sent Commissioners to 
the Committee of Weights and Measures in Paris were presented with a kilogramme 
and a metre by the French government. A similar present was made to each of the 
Commissioners. These weights and measures were fabricated under the eyes of the 
united Commission and marked with their particular stamp, after being previously 
examined, it is said, with great care. The kilogramme and the metre of the late 
M. VAN SwiNDEN are now in my hands. 1 have compared Van Swinoen’s kilogramme 
and several standards of the same weight with the English troy weights of Robinson, 
and I am very sorry to say that the result has left me in an entire darkness as to the 
real value of the kilogramme. 
Van Swinden’s kilogramme 15432*295 
A kilogramme module made by Fortin and belonging to Government 15432*752 
A kilogramme modele made by Ganuolfi, Balancier de laMonnaye de 
Paris, and sent during the French occupation of this country by the 
Parisian Mint to the Mint at Utrecht 15432*730 
A kilogramme by the same artist, also belonging to the Mint at Utrecht 15432*752 
A kilogramme by Nagel of Amsterdam, and serving as a standard at 
the Mint 15432*920 
Another, made as a standard for the Royal Institute of Holland . . 15432*985 
Another by the same, in my possession 15433*420 
Another, also said to be a standard 15434*91 
Anniiaire du Bureau des Longitudes 15438*355 
Kelly 15433,” 
According to Hassler (Comparison of Weights and Measures reported 
to the Senate of the United States, 1832), the weight of an original brass 
kilogramme^presented to M. Tralles by theFrench Committee of Weights 
and Measures, in grains of which the United States Mint troy pound 
adjusted by Captain Kater, contains 5760 15433*159 
Result of the comparison of a troy pound sent to Paris, according to a 
statement of theFrench Minister of the Inteiior, in a letter to the English 
Commissioners of Weights and Measures, dated Paris, February 28, 1821 15432*719 
