But if there might be doubt about the sensitiveness of a
butterfly, there could be no doubt about his distinguishing
marks. It was amazing to us how many grown-up and (presumably)
educated men and women did not know that a butterfly had knobs on
the end of his antennae, and that the moth had none. Where had
they been all these years to be so ignorant? Well-meaning but
misguided aunts, with mysterious promises of a new butterfly for
our collection, would produce some common Yellow Underwing from
an envelope, innocent (for which they may be forgiven) that only
a personal capture had any value to us, but unforgivably ignorant
that a Yellow Underwing was a moth. We did not collect moths;
there were too many of them. And moths are nocturnal creatures. A
hunter whose bed-time depends upon the whim of another is
handicapped for the night-chase.

But butterflies come out when the sun comes out, which is just
when little boys should be out; and there are not too many
butterflies in England. I knew them all by name once, and could
have recognized any that I saw--yes, even Hampstead's Albion Eye
(or was it Albion's Hampstead Eye?), of which only one specimen
had ever been caught in this country; presumably by Hampstead--or
Albion. In my day-dreams the second specimen was caught by me.
Yet he was an insignificant-looking fellow, and perhaps I should
have been better pleased with a Camberwell Beauty, a Purple
Emperor, or a Swallowtail. Unhappily the Purple Emperor (so the
book told us) haunted the tops of trees, which was to take an
unfair advantage of a boy small for his age, and the Swallowtail
haunted Norfolk, which was equally inconsiderate of a family
which kept holiday in the south. The Camberwell Beauty sounded