C ^3 ) 
thofe of the Back, as they Naturally are,* there wa^ no 
unnatural bunching out, their joyning together very 
regular, no on^Fertelra (landing out beyond the other, 
either before, behind, or on the fides. The Cavity for 
the Spinal Marrow had no fault but its bending Figure. 
The Bones of the Os Pubis were feparated as umally. 
The Socket or Cavity of the laft Baftard Rib on the 
right fide being fmooth and polifht, feenaed as if that 
Rib had not been fo firmly united as the reft. In the 
extremity of the Ribs next the Sternum^ the ufual Ca- 
vities for the Cartilages to move in, were obfervable , 
which as it feems by this were not Bony, nor continuous 
with the Ribs. 
It was a fiirprifing fight to fee the fport of Nature in 
the Fabrick and hardening of thefe Bones, which Natu- 
rally move upon one another, are feparated by Carti- 
lages, and held together only by Cords and Ligaments, 
and chiefly that the Ribs fiiould be thus joy ned with the 
reft, which are perpetually raifed in Relpiration, and 
whofe Motion is upon the Veruhrce as its Centre ; and 
we fie motion hinders the iips of a Wound from clofing, 
and a broken Bone from uniting. Fontanus reports it 
as a very ftrange thing, that he once happened to fie 
three Ribs joyned together. And Taufanm makes men- 
tion of one Protophanesy in whofe dead Body all the true 
Ribs were found to be united : But it is much more ex- 
traordinary to find all the Ribs and Vertelr(B but one 
continued Bone, than to find the Ribs joyned, for they 
may be faid to move ail alike, and ftill parallel to each 
oj:her5 fo that they being always kept at the fame di- 
ftance, need but increafe and grow broader to meet and 
unite. 
Thus far I have endeavoured to give our Author s fenfe 
almojl Verbatim, it being moflly matter of OhfervatioH , 
hut the remainder of the Letter heing only dedu^ions and 
Reafonings thereon ^ I Jhall only give a fhort epctraSl 
thereof Ex It 
