(Heft 3), 1874-82.), but I have already received and read a copy of the same, or at least of a very similar essay, and admirably good it seemed to me.
This essay, and one by Mojsisovics (286/2.

See note to Letter 285.), which I have lately read, show what Palaeontology in the future will do for the classification and sequence of formations.

It delighted me to see so inverted an order of proceeding--viz., the assuming the descent of species as certain, and then taking the changes of closely allied forms as the standard of geological time.

My health is better than it was a few years ago, but I never pass a day without much discomfort and the sense of extreme fatigue.
(286/3.

We owe to Professor Judd the following interesting recollections of Mr.Darwin, written about 1883:-- "On this last occasion, when I congratulated him on his seeming better condition of health, he told me of the cause for anxiety which he had in the state of his heart.