With kind remembrances to Lady Lyell, believe me, faithfully yours,

T.H. Huxley.

We shall be here for the next ten days at least. But my wife will always know my whereabouts.

Jermyn Street, March 23, 1863.

My dear Sir Charles,

I suspect that the passage to which you refer must have been taken from my unrevised proofs, for it corresponds very nearly with what is written at page 97 of my book.

Flower has recently discovered that the Siamang's brain affords an even more curious exception to the general rule than that of Mycetes, as the cerebral hemispheres leave part not only of the sides but of the hinder end of the cerebellum uncovered.

As it is one of the Anthropoid apes and yet differs in this respect far more widely from the gorilla than the gorilla differs from man, it offers a charming example of the value of cerebral characters.

Flower publishes a paper on the subject in the forthcoming number of the
"N. H. Review."

Might it not be well to allude to the fact that the existence of the posterior lobe, posterior cornu, and hippocampus in the Orang has been publicly demonstrated to an audience of experts at the College of Surgeons?