• £ 536 ] 
Several Apartments, and grow proportionally • hujt 
if the . Parts of- the Membranes, which are clofe to- 
gether, by tcing thjn-iand weak, or by any irregu- 
lar llcfiftanee, or Fri&ion, come to be diflblvccTor 
broken, then the Fluids of both unite, and the two 
little Organizations, having no longer a Partition 
between them,; come together, adhere, and intwine 
into each other, their tender Parts ea% coalefcin^ 
and from the natural Difpo/ttion of each to grow 
and increafe, .their Accretion goes on, there "is a 
mutual Infmuation of Veflels where the Parts are 
comprcfled, and a mutual confufed Circulation car- 
ried on, and at length the Whole becomes irregular 
and. monftrous. : ■ > * , • . . 
. , . 
W^e have many Fa&s to corroborate this Opinion, 
and to fhew that the Fibres of Animals and Vege- 
tables have a wonderful Capacity of extending and 
infinuaring themfelves into one another,* and of 
continuing a Circulation reciprocally 5 and the 
Blood-Veftels of being elongated, and even of 
producing new Ramifications where the Reftora- 
tion of a Part requires it, from the. Principles I 
before laid down in the fir fit Part of my Ana- 
logy ; elfe how fhould wenny Tumours of a 
monftrous Size be propagated on the Surfaces of' 
human Bodies? how fhould the Lungs adhere to 
the Tleura fo intimately as to become one entirely 
united Mafs, as incapable of being feparated without* 
a Knife as any Part ofaMufcle? How fhould the 
Stir cult oi Buds of Trees implanted into others by 
Grafting or Inoculation, fo infinuate their Fibres into 
thole of the Stock in which they grow, as to 
become 
