Of OXFORDSHIRE. i S 



quiet and ftill) at leaft nine, if not ten or eleven times, but fo 

 thick and clofe, that even a dijfyllable breeds a confufion : Where 

 by the way if it be objected, that (the whole wall being but 40 

 yards, or 120 foot long) according to the afore-limited diftance 

 for Echo's, a monofylldble fhould not be returned above once at 

 moft: It is to be noted, thatthefe Echo's made by a double re- 

 flexion, begin (quite contrary to all others) at the remoteft objecl: 

 from the corpus fonorum, which in as many as I have yet feen, is 

 a diftincl: wall, falling on that ; on which the reft of the objefts 

 are, in right angles ; and this objecl: it is, that firft terminates 

 the voice, clap, or ftamp ; and from which, by reflection, they 

 next ftrike the ultimate fecondary objecl;, then the penultimate and 

 antepenultimate; which, though nearer to the corpus fengrum in 

 refpett of the fituation of the obje&s, yet are ftill further off 

 in refpeft of the voice, or other founds motion : whence it 

 comes to pafs, that the neareft objecl: to the corpus f Quorum is laft 

 ftricken, and therefore repeats a fyllable as well as any of the 

 reft, becaufe indeed in that refpeft the furtheft from it. 



29. After the voice or clap has ftricken thefe fecondary ob- 

 jects, by way of acceffion as it were to the corpus fonorum, it is 

 carryed again by a fecond reflection away from it toward the 

 primary objecl, and fomtimes over it, as it appears to be in this 

 Echo at Heddington, where the found feems as it were fomwhat 

 refrafted, for it is heard quite out qf the place, as is evident to 

 any one that ftands in the Nortb-eaft corner of the Garden and 

 fpeaks Wtffatrdf*. who will hear the Echo rather in theHortyard 

 on the other fide the wall, than in the Garden, which I take 

 moft certainly to be occafioned by this fecond refleclion ; for let 

 any one that fufpefts the Echo tq pe really in the Hortyard, and. 

 not in the Garden, go but into it, and he fliall there find no fuch 

 matter as an Echo. All which, is more fenfihly explained in 

 Tab. 1. Fig. 4. where 



a. is the place of the fpeakeror maker of any other found. 



h, the primary objecl firft terminating the founds and rebelling 

 it on the?eei'softhe other wall. 



c c e c c c. the Peers between ev$ry two Niches that receive the 

 found refiecled from the primary objecl and make the Echo. 



d d d d d d. the lines wherein the voice is carryed back.again 0- 

 ver the primary objecl, whereby the Echo appears out of its 

 place. But 



