Some corrections and queries about Variation text. Is pushing hard to finish, but CD is right that the names in the notes make the work interminable. Fears he is causing delay in publication. Is astonished at "the wonderful array of facts brought together and at the manner in which you bring them to bear".

WSD is pushing forward as fast as he can with [index to] second volume [of Variation]. The work is fearfully heavy.

Regrets that the remarks in his letter [5712] seemed to CD to be criticisms. Nothing was further from his intention. He is working hard. "The subjects often seem to elude the Index-maker."

He is vexed that CD has had to write again about the index. He has no excuse except "the nature of the work itself".