( 77 ) 
lEalj being bigger than the /upct- 
fice of the long finee concreted litle fliell^ 
recedeth from the fame, and thereby 
fartlj draws into threds the, glutinous 
humor contained, between both, fuper- ; 
fices (the which is very common to vif-s 
cous. humors, ) increafeth it by 
excreting new moifture, conhdqring that 
np other matter; can penetrate between 
the faid two fuperficcs. 
3. That the diverfity of the Threds 
depends from the dijBference of the Pores, 
to be found in the fuperfice of the Ani¬ 
mal, and from the difference of the mat¬ 
ter that is excreted by the fame pores: 
For fuch kind of animals have ^. conftderabie ; 
a two-fold fubftance in their /»»■. the 
fuperfice,whereof one is bar- 2?"*'**” 
dcr, the other fofierj both fi- ' 
brous; the mpre accurate inveftigation 
of which brings no fmal light to Olfe^ 
ology, or the Explication of Bones. 
4. That all little Shells^ the outer- 
mofi; or fmalleft excepted, are produced 
between the exteriour fhell and the very 
Body of the Animal, and conlequently 
have receiy’d their figures not from them- 
felves. 
