1)8 
THE SUBSTITUTE. 
cii'cumstaDces, — the result of the 
action of those fixed and unalter- 
able powers which we call laws of 
Nature. 
We believe then that habit 
must depend upon structure, and 
that we have no proof that struc- 
ture is ever so far modified by 
habit as to adapt an insect to con- 
ditions totally at variance with the 
ordinary circumstances of its ex- 
istence. If it were so, creation 
would soon become a chaos, and 
law and order be extinct. Powers 
may be diminished, not added. 
UifiFerence of situation is supplied 
by Nature by difference of species, 
and not by modification of exist- 
ing ones ; and so, “ particular 
manners can never “necessitate 
modifications in their organisa- 
tion.” 
TO CORRESPONDENTS. 
All communications to he authen- 
ticated hy the name of the writer, 
and to be addressed To the Edi- 
tor OF ‘The Suhstitutk,’ 9, 
Devonshire Street, Bishops- 
GATE Street, London. 
It is particularly requested that 
all Names of Insects may be uritten 
plainly and icithovt abbrematinn, 
and that they may be arranyed in 
the order of any of the printed 
lists. 
‘The Substitute’ will be con- 
tinued for Twenty weeks, and ivill 
be foncarded weekly hy post to 
Subscribers of Five Shillinys, 
which amount may be sent in 
Postage-stamps to the Publisher. 
The Paper will always be ready on 
the Friday, and may be procured 
of Kent & Co., Paternoster 
Row, as well as of the Publisher. 
Several communications only 
wait for room. 
G. F. M. — The ‘Manual’ will 
make two volumes. Vol. I. will 
conclude with the Noctuce. 
The ‘ Intelligencer ’ is an- 
nounced to appear again on the 
4th of April next. 
DUPLICATES AND DESIDERATA. 
R. Weaver’s Desiderata: useful 
specimens. (Steph. Mus. Cat.) 
Colias Hyale, 
Theda Betulae, 
„ W-Album, 
Polyoinmatus Arion, 
Apatura Iris, 
Trochilium Vespiforme, 
„ Allantifonne, 
„ Culiciforme, 
Stauropus Fagi, 
Notodonta Iritophus, 
Lophopteryx cucullina, 
Drymonia Dodonea, 
Clisiocampa Castrensis, 
Eu!ej)ia cribrum, 
Lithosia aureola, 
„ helvola, 
Cybosia mesomelia, 
Tripharna subsequa, 
Lytaa agathina, 
Cliarteas cespitis, 
Agrotis lunigera, 
„ obelisca. 
