( !3 ) 
* thofe Spines ]\^^ mentioned, there were other Pro- 
cejfm's for the advantage of fetting on of the Ribs> and 
the Articulation with oneanc ther ^ but What was moft re- 
iiiarkable is ( what I have already hinted ) that round 
^c. f Ball in the lower part of the upper Vertebra^ which en- 
ters a focket of the upper part o the lower Vertebra ^ like 
as the head of the Os Femoris does tht Acetabulum of the 
Os Ifcbtj s~ by which contrivance, as alfo the Articulation 
with one another^ they have that fre^e motion of winding 
their bodies any wayes. The Ribs in the Neck were 
fmallj but larger towards thenaiddle of the body ^ where 
they were about 2 Inches long ^ but towards the Tail they 
grew kfler and fhorter againiand did all terminate at the 
beginning of the Scales of the belly. In the Vertebm of the 
h b Tail inwards there were wo^Spifies ^ whereas in the other 
Vertebrce there was but One $ as likewife therewere here 
II c c tranfverfe nender||Pm^/2^/s fomething analogous toRibs» 
To the laft Vertebra of the Tail was fattened th^ l{at- 
fFig, u. 12 5 Subjesft there was but S^but fome others deni- 
ed to be broken off. Thatnext the Taile wasof alead- 
coloari the others of a cinericeous. *Tis well defcri- 
bed by ^ Dr. Grew » who fays : 'They are very hollow, 
■ * thin, hard, aMdry bones ^ and therefore very brittle, 
5 almoft like glafs s and very fonorous- They are all ve- 
' ry near of the fame bulk , and of the felf fame figure ^ 
* moft like the Os facrum of a man: for altho the laft of them 
*onIy feems to have a rigid Taile, or Epiphyjis adjoyned 
* to it, yet have every one of them the like i fo as the 
^ Taile of every uppermoft bone runs within two of the 
* bones below it 5 by which artifice they have not only a 
* moveable coherence, but alfo make a morv multiplyed 
* found h each bone hitting againft two others at the fame 
nirae. 
The ufe of this little (fince I know no |other) I (halj 
give in the words off Gulielm. Pifo^ who tells us 5 Hut 
tarn perniciofo Colubro^ benigna natura cautionis quafigrao 
tia 
