with an extraordinary fliarp Knife, nothing but Globules 
appearing : But when it is broken, fome Shivers are fepa- 
rated, in which thefe Tubuli may be feen. 
Another fort of thefe Tuhuli (of which fbme are fix, 
times bigger than the other) are yet hard to be difco- 
vered ; tor though the Knife be very {harp, yet by rea- 
fon of the hardneft of the Bone many Particles of them 
are broken and fqueezed together, fb as the Mouths of 
the little Tubes are doled up. 
A Third fort much larger than the former, had ne- 
verthelefs their Mouths fcarce difcoverabie ; but I found 
them placed in fuch an Order, as convinced me, that 
the Ring of thefe Tuhuli was the Augmentation of the 
Bone, as I had formerly difcover'd it to be in Wood, 
efpecially when t faw, at a little diftance, another Circle , 
or Ring of Tubuli. 
A Fourth fort exceeded the former very much, and 
were fewer ; fb that in the fpace of three or four Sands 
I did fcarce find one of them. 
I have reprefented as well as was poflible a fmaJl bit 
of an Oxes Thigh Bone, as it Ihew'd before my Glades, 
Fig. 6. AB C D, the bit by the naked Eye was not big- 
ger than the little Spot, Fig. 7. E FGis the Point of a 
fmall Needle on which the bit of Bone was ftucL I" 
could not obferve the firfl: and leaft fort of Tuhuli in this » 
little bit ; for when the Bone is thus cut, the ends of the 
fmall Tubes are but confufedly to be feen, like irregular 
Globules. But the fecond fort look like little dark 
Specks, their Cavities being ftopt, by cutting which are 
fcarce to be difcemed, efpecially if the Knife does not 
cut them at very true right Angles • for if it be ever ,: 
fb little aflope, it is impofiible to dacover thefe Veffels^ 
They are reprefented Letter HHH. 
1 
