42 
ELEMENTS OF ENTOMOLOGY. 
The opemn 0 through which they pass is always at the same part of tl' e 
Uttle abov ® th f trunk > between the wings and a small pi**’ 
which coven, the head: different fissures are generally made in tl* 
l ‘ r, f Um ' l V l 1611 lhe 0 P eratioa begins, there seems to be a vi^ 
agitation in the humours contained in the little animal ; the flui* 
b mg driven with rapidity through all the vessels, the limbs and varied 
T ptt v 111 mot T’ and b - v efforts it brea^ 
through the brittle skin that envelopes it. Those inclosed in cones * 
a bursting through the pupa covering, have another difficuW 
looxercome that of piercing through the inclosure, which in nutti 
^ I* v 3 T&* t£UUrC than the Case of the f«P*- F«r tl> ( 
accomplishment of tins, most insects arc provided with a liquor, which 
wWehtW^ .7 ' m ° Uth u P on that P a rl of the cone through 
i } nd ,f° es fP e 5 an(1 so moistens and weakens it, tW 1 
altu a Short time they force their passage through with some facility 
home insects not provided with this fluid leave one end of their coP e 
T lci ,? c i , t ^‘ywith a few threads, so dint* 
i- ’ , f °“ °, the heu, ‘ enf * les * c msect to burst from its prison. ’ 
I he butterfly or moth on emerging from the pupa is moist the ah 
domen swollen, the antenna; bent down m,i ,t • , A 
small, and shapeless. These narts lm ’in e T, tn P s crum P e ! 
their destined form. The wm’TltofS y “ d 
acqmre.hctr full me; and the fibres, which were at first flexbLV 
r!, e , ■ irU r', K '\ ke u 0De - the fibres lose A* 
flexibility, the fluids which circulate within them extend, and the win?' 
cease to act; so that ll any extraneous circumstance arrests the progre* 
o this fluid through the fibres at the first instant of the moth’s escape 
the wings immediately become crippled, and never afterwards assur® 5 
ket t "}• OSt lnSeCtS ’. S00U after th °y have attained > 
fcct stale, void an excrcmentltious substance, which in some nlaceSi 
25 *• !»*- npwts SZS£< 
JIfs Ss SfeS. ££ nr, 7* " 5 
”*I of life 4-0. I must rel'or the LL ' 
— > ““““ « *!»* 
