If I had to cut up myself in a review I would have [worried ?] and quizzed sexual selection; therefore, though I am fully convinced that it is largely true, you may imagine how pleased I am at what you say on your belief.

This part of your letter to me is a quintessence of richness.

The fact about butterflies attracted by coloured sepals is another good fact, worth its weight in gold.

It would have delighted the heart of old Christian C.
Sprengel--now many years in his grave.
I am glad to hear that you have specially attended to "mimetic" analogies--a most curious subject; I hope you publish on it.

I have for a long time wished to know whether what Dr.Collingwood asserts is true--that the most striking cases generally occur between insects inhabiting the same country.
LETTER 124.