THE ENTOMOLOGIST’S 
WEEKLY INTELLIGENCER. 
No. 207.] SATURDAY, SEPTEMBER 22, 1860 [Price Irf. 
PIN. MAKING. 
“A PIN is a small bit of wire, com- 
monly brass, with a point at one end, 
and a spherical head at the other. In 
making this little article there are no 
less than fourteen distinct operations.” 
We quote the above from Dr. Ure’s 
‘ Dictionary of Arts, Manufactures and 
Mines,’ where we also find the fol- 
lowing sentence: — “The pin manufac- 
ture is one of the greatest prodigies of 
the division of labour; it furnishes 
12,000 articles for the sum of three 
shillings, which have required the 
united diligence of fourteen skilful 
operatives.” 
In like manner we frequently find 
that it takes the collective observation 
of several entomologists to discover the 
habits, &c., of one larva. One finds 
the larva, another discovers its food, 
and a third rears it. No one yet has 
ever found the larva of Butalis incon- 
gruella and reared it; yet we now 
seem to be well acquainted with the 
larva of that species, and to know all 
about it. If our readers will refer to 
the ‘Intelligencer,’ vol. i. p. 113, they 
will find, towards the close of the 
leading article which is lieaded “ Do 
you double up your perambulators ? ” 
the following paragraph: — 
“ An unusual number of discoveries 
have been made, not whilst entomo- 
logists were looking for insects, but 
whilst they were resting discussing 
some luncheon ; for one thing, they 
then remain stationary in one spot for 
some little time ; but we fancy the 
main cause of discoveries being then 
made is, that as they are not specially 
looking on any plant, any moving 
thing that enters their field of view 
more readily attracts attention. Twice 
during the month of July has Pro- 
fessor Zeller, on such occasions, found 
a case-bearing larva, which put its 
head out indifferently at either end of 
its case, and was as lively and tre- 
mulous as a Gelechia larva. Can any 
of our readers find such a thing?” 
Mr. Scott has answered this question 
in the affirmative, by finding this larva, 
at the beginning of the present month, 
on a fence at Cannock Chace. But 
neither Mr. Scott nor Professor Zeller 
had the most remote conception of the 
species, or even genus, to which these 
singular larvee belonged. That piece 
of information has been obtained from 
other quarters. 
In the first place, cases precisely 
