Down [October 22nd, 1864].
The Lyells have been here, and were extremely pleasant, but I saw them only occasionally for ten minutes, and when they went I had an awful day [of illness]; but I am now slowly getting up to my former standard.

I shall soon be confined to a living grave, and a fearful evil it is.
I suppose you have read Tyndall.

(179/1.

Probably Tyndall "On the Conformation of the Alps" ("Phil.

Mag." 1864, page 255).) I have now come round again to Ramsay's view, (179/2.