But I must not run on.

By the way, I find Link in 1820 speculated on relation of Alpine and Arctic plants being due to former colder climate, which he attributed to higher mountains cutting off the warm southern winds.
LETTER 355.

J.D.HOOKER TO CHARLES DARWIN.

Kew, November 2nd, 1862.
Did I tell you how deeply pleased I was with Gray's notice of my Arctic essay?
(355/1.

"American Journal of Science and Arts," XXXIV., and in Gray's "Scientific Papers," Volume I., page 122.) It was awfully good of him, for I am sure he must have seen several blunders.