(seq. 212)

a continuing tone be produced in an unelastic Body by
by operating the blow quick & often as in a Drum & fiddle
[?] as we should multiply the number of blows or
repeat them at shorter Intervals as on the Drum [?]
this will have no Effect in altering the tone it will
only make it more even or more distinct, but if we
strike with double Weight this will produce a tone
twice as loud as the former; hence we infer that
all bodies give a louder & graver tone not in proportion
to the number of times but the force of the stroke
therefore the Philosophers who make the tone of a sonorous
body depend on the number only of it's Vibrations
have mistaken the Effect for the Cause, 'a bell or
an elastic string can only be considered as a Drum
beaten and the frequency of blows makes no
alteration whatever in the tone, the largest Bells
and the longest and thickest strings have the
most forceful Vibrations & therefore their tones are
the loudest and gravest. To know the manner
on which sounds become pleasing observe that no
one continuing tone gives Satisfaction we must have
a Succession of them and those in the most [pleasant?]