Regularly attends Owen’s lectures. Owen at pains to show groups are not linked. Thus makes Lepidosiren appear fish-like.

GRW thinks embryology will become chief guide to insect classification. But contradictions between classification based on embryological and adult characters do occur.

Answer to CD’s query on genera and species ranges.

Comments on typical forms.

Preparing first part of Galapagos plants for printing.

Thanks for information on printing charges

and for clarifying "typical forms".

In a few days CD will go away for six weeks.

Sends samples likely to contain Infusoria and some that Hooker collected in Antarctic regions.

Defines the term "typical species" and discusses its use among zoologists. Cites example of type of Carnivora. Comments on general law of development of parts in animals. Cites teeth of Carnivora.

Is puzzled by CD’s question about the Viverridae; thinks if there were only one species he might regard it as an aberrant of some other group and not select it as a type of the Carnivora.