Volet, Charles, [342]

Wilkes, Charles, [317], [318]

Transcriber’s Corrections

Formatting of equations has been altered from the original to display them ‘in line,’ and brackets have been added to clarify expressions where necessary.

Footnotes have been moved to the end of the paper. Illustrations and the Glossary of Gravity Terminology section have been moved to avoid breaks in paragraphs. Minor punctuation errors have been corrected without note. Typographical errors and inconsistencies have been corrected as follows:

P. [320] ‘difference T1 - T2 is sufficiently’—had ‘sufficlently.’

P. [321] ‘faites à Genève avec le pendule à réversion’—had ‘reversion.’

P. [326] ‘Schwere mit Hilfe verschiedener Apparate’—had ‘verschiedene.’

P. [328] ‘between the yard and the meter.’—closing quote mark deleted.