No summary available.

Returns Lake Superior [1850], which he already has received from Agassiz. Thanks for pamphlets by C. B. Adams [on Mollusca, Contrib. Conchol. 10 (1851): 189–206; 11 (1852): 207–15].

Describes his dissection of an unusual cirripede [Alcippe lampas] with 12 males attached [see Living Cirripedia 2: 556, 558].

Objects to early deadline for submitting manuscript [of Living Cirripedia 2 (1854)]. Discusses illustrations by G. B. Sowerby [Jr].

Volcanic activity of Mt Kilauea as described by Dana [Am. J. Sci. 2d ser. 9 (1850): 347–64]. Discusses the mechanics of volcanic eruption. Disputes view of William Hopkins that simultaneous action by volcanoes of different heights must come from separate lava sources. Notes relationship of continental elevation to volcanic action.

Thanks for specimens of cirripedes attached to rocks, which show no boring. CD hopes to see some on limestone.

Encourages CSB to do research on the complemental males of Scalpellum vulgare.

Discusses geological foliation and cleavage. Urges ACR to read CD’s remarks on subject in his South America before ACR publishes his paper ["On the lower Palaeozoic rocks", Q. J. Geol. Soc. Lond. 9 (1853): 161–79].

Discusses JAHdeB’s drawing of a Verruca.

Describes meeting of Geological Society [1 June 1853].

Mentions his criticism of Murchison’s lecture on flints.

Describes Robert Chambers’ "On the glacial phenomena in Scotland" [Edinburgh New Philos. J. 54 (1853): 229–82].

Mentions controversial election of members to the Royal Society.

Will quote CSB on discovery of Alcippe lampas.

Hopes CSB continues to look for Verruca on limestone.

Discusses use of CSB’s larvae illustrations [for Living Cirripedia].

Sends thanks for recent specimen, which gave him conclusive evidence that Verruca acts only on calcareous rocks.

Asks for a reference on carbonic acid.

Is glad CSB progresses in research on spider-like Crustacea.

Asks about source of paper on the metamorphosis of Pycnogonida for C. S. Bate.