Could you not spin a long week out of this examination?
it would in truth delight us, and you could bring your papers (like Lyell) and work at odd times.
Forbes has been writing to me about his subsidence doctrines; I wish I had heard his full details, but I have expressed to him in my ignorance my objections, which rest merely on its too great hypothetical basis; I shall be curious, when I meet him, to hear what he says.

He is also speculating on the gulf-weed.

I confess I cannot appreciate his reasoning about his Miocene continent, but I daresay it is from want of knowledge.
You allude to the Sicily flora not being peculiar, and this being caused by its recent elevation (well established) in the main part: you will find Lyell has put forward this very clearly and well.

The Apennines (which I was somewhere lately reading about) seems a very curious case.
I think Forbes ought to allude a little to Lyell's (22/2.

See Letter 19.) work on nearly the same subject as his speculations; not that I mean that Forbes wishes to take the smallest credit from him or any man alive; no man, as far as I see, likes so much to give credit to others, or more soars above the petty craving for self-celebrity.
If you come to any more conclusions about polymorphism, I should be very glad to hear the result: it is delightful to have many points fermenting in one's brain, and your letters and conclusions always give one plenty of this same fermentation.