n The S\(amral Hijlory 
different circumftances perhaps of time, as well as place ; and 
that poffibly Merfennus might not be fo much miftaken, when he 
affigncdto each fyllable but 69 feet. 
23. Tonical Echo's^ fuch as return but fome one particular Mu- 
fical Note, I have met with feveral, and do not doubt but they 
are to be met with in moft arched Buildings, though fcarce ob- 
ferved or noted by any. Such a one is that in the Gate-houfe at 
Brafen-nofe College^ which anfwers to no Notefo clearly, as to 
Gamut, The curious and well built Gate of Vniverfity College^ 
to none fo well as B mi. The like Note I met with again at Mer- 
ton College^ in the Vault between the old and new Quadrangles, 
and in the large arched Vault of Queens College Gate : Whereas 
the (lately arched Stair-cafe leading into Chri§l Church great 
Hall, will return all the Notes through the Scale of Mufick. Thefe 
I muft confefs are but Echo's improperly fo called, becanfe they 
will exprefs nothing that's articulate, and therefore rather fall 
under the notation of a Bomhu4 ; ^jcl their caufc being fomwhat 
nice and fubtile, I thought not fit to pafs them by, but to take oc- 
cafion from hence to advertife the Reader, that there are fome 
other inanimate Bodies befide the Load-ftone^ that though they 
havenofenfe, yet have a fort of perception, which I take to be 
fufficiently proved from thefe Vaults, that feem to have a kind of 
election to embrace what is agreeable, and exclude all that is in- 
grate to them: thus are the very feats in Churches and Chappels 
affected with fome peculiar Notes of the Organ and I have a 
friend (a Violift) whom I dare believe, that fays, his Thigh is 
thus fenfible of a peculiar Note, as oft as he lights on it during 
his playing. Some have imputed much of this in Buildings, to 
the figure and accurate ftru6:ure of the Arch, and that where they 
have different fhapes and magnitudes, there will be different 
tunings alfo : But I do not find it agreeable to experience, there 
being another Vault in the entrance into Merton College Chappel, 
muchlefs, and of a far different figure from that other before 
mentioned in the fame ^'o/Ze^e, which returns very near, if not 
exaftly the fame Note : And fo do the Gates of Queens and Vni- 
verfity Colleges^ than which in height, breadth and length, there 
are few more different. 
24. It muft therefore rather be referred to the pores of the 
ftones, which are fitted' to receive fome vibrations of the Air, 
rather 
