Dissected beak of Rhynchops shows no extensive innervation. But beak may nevertheless be a sensitive organ of touch as CD suggests.

Thanks CD effusively [for Journal of researches] – "the most delightful book in my collection".

CD and [Emma Darwin] are invited to "a holiday musical evening".

Will welcome CD’s work [Origin] with a "close & continuous perusal".

Believes in the "operation of existing influences or causes in the ordained becoming and incoming of living species" and so could not regard CD’s attempt to demonstrate the nature of such influences as "heterodox".