PHILOSOPHICAL 

 TRANSACTIONS. 



I. An Account of the construction and adjustment of the new 

 Standards of Weights and Measures of the United Kingdom of 

 Great Britain and Ireland, By Captain Henry Kater, 

 F. R. S. 



Read November 24, 1825. 



Ike weights and measures of the United Kingdom of 

 Great Britain and Ireland are founded upon a standard, the 

 length of which is determined by the proportion it bears to 

 that of the pendulum vibrating seconds of mean time in 

 London. The length of this pendulum I have stated to be 

 39,13929 inches of Sir George Shuckburgh Evelyn's 

 standard scale; and the experiments from which this con- 

 clusion is deduced, are detailed in the Philosophical Transacr 

 tions for 1818. The important consequences, however, which 

 attach to this result, render it necessary to examine with 

 what degree of confidence it may be received. 



In the Paper to which I have alluded, it is mentioned that 

 a series of experiments had been made previous to those 

 detailed ; the result of which was rejected, in consequence 

 of its being discovered, after their completion, that the steel 



MDCCCXXVI. B 



