' - ( ?70 ) 
ceivers was pretfy well exhaufted, and the Bell ftrnck, 
the Sound was.fenfibly very vigorous, and (I think) 
very nearly as great as before any Air v/as taken 
away at al4 yet it ones Finger was apply’d to the 
Apperture of the hollow Brafs Tube, the Sound 
would be fo much diminilh’d, as but juft to be di- 
ftinguithed. By this we fee, that fince the Sound in 
that ftate cannot be tranfmitted thro’ the Receiver 
that includes it, by means of the furrounding Vacuumy 
yet the Receiver is certainly ftruck with it 3 but 
finding no conveyance that way, reverberates and 
makes its Pallage where it find leaft refiftance. Nor 
-did I obferve, that altho’ the Sound had but one 
palfage from its Receiver, and that but a ' fmall one, 
that it continu’d any longer from the Stroke, than if 
it had been made in the open Air. 
