( ) 
But what I was mod of all pleafed to fee, and I think, 
is a wonderful Piece of Nature's Mechan'tfm^ was, thole 
Spwes t or Hooks placed in a Line, in the Middle of the t ^<»' la- 
under Side of the Vertebra of the taiL 'Tis true, the 
firft Three Vertebra had none of thefe Spines^ nor vvere 
they neceflary here, fince they lay within theCompafs 
of the OJfa Coxendicis ; but in all the other Vertebra, to 
the End of the Tail.thty were to be obferved ;but as they 
approached the Extream of the Tail, they grew leflcr 
and fliorter. The(e Spikes \\ (where longeft) were about u xab/i. 
a Quarter of an Inch, or fomewhat more : they were ^'^•^o-^^^- 
placed juft at the Articulation of each JoiKt, and, as I 
faid, in the Middle from the Sides ; and fcemed to be 
articulated, both to the preceding and follovs ing Verte- 
Ira; not being an entire (olid Body, but anfipgirom 
the F€rttbr£ with Two Legs or Crura, become aikr- 
wards perfedly united at the Ends By this means, rhe^e 
Bottes are rendred more firm and ftrong,and this Hollow c c, 
ferves for the tranlhiitting the BlooJ-Veffels thorough 
them I and one may obferve here a Stria, or Furrow, 
all the Length of the Vertebra, for the receiving them 
whereby they are the better ftcured from Comprefiion, 
when this Animal hangs by his TaiL And for the per- 
forming this Office, nothing, I think, could be more ad- 
vantageoufly contrived : For when the Tail is cwirl'd or 
wound about a Stick,this Hook of the Spine eafil y fuftains 
the Weight, and there is but little Labour of the Mufcles 
required, only enough for the bowing or crooking the 
Tail ; for then, as by a Hook, the Weight of the who«Ie 
Body is hereby fufpended. And for the doing this, 'twas 
obferved, that in each preceding Vertebra, there did a 
Mufcle arife, which was inferted on each fide of the fuc- 
ceeding Vertebra ; which Adring or Contraliing, muft 
neceiTarily bend and curve that foint. But for the 
ftrengthening the whoIe,there was oblerved Four Mufcles 
to 
