Dear Sir

You have been wonderfully kind to have taken so much trouble for me, & as it has proved almost in vain, though by no means quite so, for there is nothing I hate so much as quoting what can hardly be trusted; yet this has often been my fate.— I felt particular interest in the case, because it was apparently an instance of a new gesture or expression arising in an animal & inherited, & I know of no other, though I have such cases with mankind.

Many thanks for the reference about Dogs, which I will keep, but I fear that my small strength will never allow me to grapple with the subject again. I daresay this rather old book may be origin of statement about the scent of the Bull-dog.—²

I most heartily subscribe to what you say about the qualities of Dogs: I have one whom I love with all my heart.

With very many thanks for you great kindness | In Haste | yours very faithfully | Ch. Darwin