⚠Strong bleed-through (ghosting) of text from the reverse side of the leaf is visible throughout the page; only the prominent foreground text is transcribed.

To the

Batavian Society of Sciences

at Haarlem,

which

a more precise investigation

of the

vibrations of a surface This refers to the study of Chladni figures or nodal patterns on vibrating plates, a major topic in 18th-century acoustics.

discovered by the author

vibrations of a surface

has presented as the prize question for this year,

respectfully dedicated.