Note 123 — Chapter VIII · LIFE AT DOWN. 1842-1854.

In 1860 he wrote to Lyell: "Is not Krohn a good fellow? I have long meant to write to him. He has been working at Cirripedes, and has detected two or three gigantic blunders, about which, I thank Heaven, I spoke rather doubtfully. Such difficult dissection that even Huxley failed. It is chiefly the interpretation which I put on parts that is so wrong, and not the parts which I describe. But they were gigantic blunders, and why I say all this is because Krohn, instead of crowing at all, pointed out my errors with the utmost gentleness and pleasantness."

There are two papers by Aug. Krohn, one on the Cement Glands, and the other on the development of Cirripedes, Weigmann's Archiv. xxv. and xxvi. See Autobiography, p. 39, where my father remarks, "I blundered dreadfully about the cement glands."