LENGTH OF THE SECONDS PENDULUM AS GIVEN BY DIFFERENT WRITERS.

NEW YORK.--Hencke 39·1012 inches.

Bartlet 39·11256 “

Nystrom 39·1017 “

Ganot 39·1012 “

Byrne 39·10153 “

Wallace 39·10153 “

LONDON.--Hencke 39·13908 “

Gillespie 39·13929 “

Chambers’ Encyclopædia 39·13929 “

Williams’ Geodesy 39·13929 “

Act of Parliament, 1823 39·13929 “

Wallace (engineer) 39·1393 “

Chambers’ Mathematics 39·1393 “

Hymer Astronomy 39·13734 “

Bartlet 39·13908 “

Vose 39·1393 “

Sommerville 39·1393 “

Nystrom 39·1393 “

Davies and Peck 39·13908 “

Ganot 39·1398 “

Wollaston (1814) 39·13047 “

Galbraith 39·139 “

Byrne 39·1393 “

Capt. Kater 39·13829 “

PARIS.--Hencke 39·12843 “

Ganot 39·1285 “

Galbraith 39·128 “

Byrne 39·12843 “

Wallace 39·12843 “

Standard Measures of United States, Great Britain and France History and actual comparisons. With appendix on introduction of the mètre · 第 14 / 15 题