forthjbut growing tpI'^V^ at laft 5 having 24. feetj 8. on each 
fide of the body, and 4. befides, clofe to each fide of the head. 
During this form, they undergo conftantly 4. SickncflTes, in 
which they Caft their Skins^each ficknefs lafting about 4. days^ 
wherein they feed not at all ; but grow clearerj fliorterj and 
thicker. The fecond, from a JVorm to an Aurelia or Chryfalis^ 
having the ftiapeofafmall Plum, whereunto it is transformed 
after its fpinning time is paft; in which ftate it lyes fliut up^ in 
hot Countries, for 1 4. or i dayes 5 in more temperate ones, 
18. or 20. without any Food or Air, known to us. During 
which time this hifeB leaves two Coats, both that of a Werrn, 
whence 'tis changed into an ^wr^/Z^i, and that of an Aurelia, 
whence it becomes a Fapilio or Butterfly , in the Theea or Cafe, 
The third is, ivom^Ln Aureliaio:xButterfly, coming but of the 
Tkca with a head, leggs,and horns; for which pailage it makes 
way by a whitiili wat^^r, it cafts upon the Silk^which moiftningj 
and thereby in a manner putrefying it,the new creature thrufts 
out its head through the ih arp end of the Ca(e^ by a Hole as big 
as its felf. There is found no Excrement in the Caje^ but the 
two Skins onely, juft now mentioned. 
Before they begin to fpin, and about the latter end of their 
feeding, they muft, faith the Author ^hc often changed, and have 
Air enough, by opening the Windows of the Room, they are 
in, if it be not too ill Weather 5 el fe, faith he, the Silk that is 
in their Belly, will caufe fo extrordieary a heat in them^ that it 
burns their gutts, and fometimes burfts them; and the fame 
( being a fobflance that refembleth Gum or Burgundy Pitch) 
will putrefy and turn into a yellowiHi matter. 
He maketh the beft marks of their maturity for fpinning to 
be^when they begin to quit their white Colour^and their green 
and yellow Circles, and grow of the Colour of Fleili^ efpeci- 
ally upon the tail ; having a kind of conjjftent ibftncf^., fiiewing 
that they have fomething fubftantia! in their Stomachs. 
As for their Worhing^ht gives this account of it ^ that the firft 
day they make only a We^bb ^the fccoad,they form in this WM 
xhtwCajes^ and cover themfelves all over with Silk • the third 
day, they are no longer feeoj and the dayes following they 
thicken their Cafes^ alwayes by one e?id or thready which they 
N 2 never 
