1^0 The Wis-Dou of GOD Parti. 



Thiat the Tails of all Birds in general do not 

 conduce to their turning to the Right and Left, 

 ucccrding to the common Opinion, but rather 

 for their Alcent and Defcent, fome modern Phi- 

 lofophers have obferv'd and prov'd by Experi- 

 ment ; for that if you pluck off, for Inltance, a 

 Pigeon's Tail, fhe will neverthelels, with equal 

 Facility, turn to and fro : Which upon fecond 

 Thoughts, and further Confideration, I grant to 

 be true, in Birds whofe Tails are pointed, and 

 end in aright Line : But in thofe that have fork- 

 ed Tails, Autopfy convinceth us that it hath 

 this Ufe ; and therefore they pronounce too bold- 

 ly of all in general. For it is manifeft to Sight, 

 that the fork'd-tail Kite, by turning her Train 

 fideways, elevating one Horn, and depreffing the 

 other, turns her whole Body. And doubtlefs 

 the Tail hath the fame ufe in Swallows, who 

 make the moft fudden Turns in the Air of any 

 Birds, and have all of them forked Tails. 



III. As for Flfhes, their Bodies are long and 

 {lender, or elfe thin, for the moft Part, for their 

 more eafy fwimming, and dividing the Water. 

 The Wind-bladder, wherewith moft of them 

 are furnifhed, ferves to poife their Bodies, and 

 keep them equiponderant to the Water, which 

 elfe wou'd fink to the Bottom, and lie grove- 

 ling there, as hath, by breaking the Bladder, 

 been experimentally found. By the Contradtion 

 and Dilatation of this Bladder, they are able 

 to taife, or fink themfelves at Pleafure, and 

 continue in what Depth of Water they lift. 

 2 The 



