Summary

HES’s letter will fructify to some extent: CD will try to be more faithful to rigid virtue and priority. Would not adopt his own notion in cirripede book without prior approval by others. Will not append "Darwin" to any of his species. Feels sure many others share his aversion.

Asks HES’s opinion on retention of generic name Conchoderma.

Summary

HES’s arguments are of great weight, but CD cannot yet bring himself to reject well-known names for obscure ones. Sends four cases that he thinks will stagger HES. Cites his problems in classifying cirripedes. CD cannot bear to give new names, yet may do wrong to attach old ones. Not one species is correctly defined. The harm done by "species mongers".

Summary

Thanks HES for solving his problem. Has some difficulty with HES’s type-species. In arranging genera in a natural order it is often impossible to say which species should be considered the type.

Summary

CD makes progress with barnacles. Describes "supplemental" males in detail. In working out metamorphosis, their crustacean homologies followed automatically.

CD opposes appending first describer’s name to specific name.

Summary

Sorry to hear of baby’s illness.

Comments on statement that belief in natural selection is passing away. Common descent of species is almost universally accepted now, and this is more important. In large part acceptance is due to Origin. Discusses reception of and interest in Origin in various countries.

Summary

Thanks AH for seeking reference. If AH cannot find Godron [see 1648] it is hopeless. Thanks for reference to C. F. Hornschuch.

Summary

Has altered and added to HES’s list [compiled for Bibliographia zoologiæ et geologiæ, edited by Louis Agassiz and enlarged by HES, (1848–54)].

On zoological nomenclature CD cites a case in which he believes more harm than good would be done by following the rule of priority. Thinks the rule of the first describer’s name being attached in perpetuity to a species has been the greatest curse to natural history. Every genus of cirripedes has a half-dozen names and not one careful description.

Sends a paper he once wrote [missing] on the subject [of zoological nomenclature].

Summary

CD thinks great dam across Yangma valley is a lateral glacial moraine.

Reports on Birmingham BAAS meeting.

Details of water-cure.

Barnacles becoming tedious; careful description shows slight differences constitute varieties, not species.

Lamination of gneiss.

Summary

Thanks AG for his criticisms of CD’s views; finds it difficult to avoid using the term "natural selection" as an agent.

Discusses crossing in Fumaria and barnacles.

Has received a naturally crossed kidney bean in which the seed-coat has been affected by the pollen of the fertilising plant.

Finds the rule of large genera having most varieties holds good and regards it as most important for his "principle of divergence".