\6 The j^jitural Hiftory 



But herein let it be noted, that I am not fo fanguine as to exclude 

 all fears that it may be otherwife, but only fuggeft what feems 

 moft probable at prefent, cum ammo revocandi, whenever 1 ("hall be 

 better informed by another, or my own future experience. 



30. At New College in the Cloyfters, there are others of this 

 kind, to be heard indeed on all fides, but beft on the South and 

 Weft, becaufe on thofe there are no doors either to interrupt or 

 waft the found : Thefe return a ftamp or voice, feven, eight, or 

 nine times, which fo plainly is occdfion'd by the Peers between 

 the windows, that on the Weft and fhorter fide (being but 38 

 yards long) the returns are more quick and thicker by much than 

 on the South, where the primary objeft being above fifty yards 

 removed from the corpus fonorum, and the fecondary ones propor- 

 tionably further the returns are much flower and more diftinft, 

 in fo much that on that fide the Echo will return a di/jyllable,whete- 

 as on the Weft fide you can have but a monofyllable only. If it 

 be objected, that according to the rule, 3 8 yards are not enough 

 for the return of a monofyllable ; I anfwer, that though it may 

 be likely enough that the return of the primary objeft on that 

 fide is not heard, yet that there is none of the fecondary ones, or 

 Peers between the windows,but what are diftant from the fpeak- 

 er above 40 yards, and therefore may well return ^monofyllable. 

 And if again it be objefted, that the interval of an Echo muft be 

 liberum and patens *, and it be further demanded how it comes a- 

 bout that we have fuch Echo's in Cloyfters, when we can have 

 none in wells that arecover'd with houfes, becaufe the interval 

 is clofed at both ends, as this Cloyfter is : It muft be anfwered, 

 that that rule holds only in narrow intervals clofed up on all fides, 

 and not in fuch Cloyfters that are open and arched to the top ; 

 Which may alfo be the reafon why at Magdalen College, where 

 the Cloyfters are covered with a flat roof, they have but an in- 

 confiderable Echo, and at Corpus Chrift/'none at all ; notwithftand- 

 ing they have all other conditions requifite. 



31. In the Cloyfter at All-fouls College, in the North and Weft 

 fides, where no doors hinder, there is much fuch another, which 

 to the ftamp of ones foot, or clap with the hands, anfwers four 

 orfivetimes, with a noife not unlike the (baking of a door, and 

 in nothing differing from the former, but that to the voice it 



* BUncani Efhmetria, 1hcoremate y 4 



makes 



