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.

Sending a letter via Ca'colia Gibson raising various queries regarding nebulae.

Is most grateful for JH's offer of assistance for one of his sons. Suggests the second one would be most suitable. Is certain Sir Charles Lemon, their president, would support him.

Is submitting a list of corrections for the astronomy section of the Cabinet Cyclopedia. Proposes a major new work on astronomy.

Would like CL to use his influence to obtain a place in Christ's Hospital for one of Robert Hunt's sons.

Will act as JH suggests and call to see the Prince Consort's secretary. Has no power himself to secure a place at Christ's hospital.

B.A.A.S. have been trying to arrange their 1846 meeting at Cambridge. William Whewell alone is opposed to this suggestion. Everyone agrees that JH should be the next president when the Dean of Ely retires. Can they have JH's views.

Regrets he made a mistake in his letter; he meant 1845, not 1846. William Whewell has been overruled and the B.A.A.S. are to meet at Cambridge in June 1845.

Can raise no objections to being president of the B.A.A.S. for 1845, but will be unable to be in York this year.

Rejoiced to receive his friendly letter, even though they have no hopes of seeing him in 1846. They are still on friendly terms with William Whewell, though they disagree on the Cambridge meeting.

A note of thanks upon receipt of the thirteenth volume of the observations of the Cambridge Observatory.

Provides a list of some of the better works for RC's library in the fields of astronomy and natural philosophy. In a postscript JH refers briefly to a few of JH's own writings.

Thanks RH for the papers of researches on light just received.

Thanks MW for the beautiful picture created by her out of one of JH's sketches made on a journey to Europe. At MW's request, JH sends along some astronomical work in the handwriting of JH's father, William.

Encloses bills for the Committee. [Johann] Lamont will be in England that year to correct continental surveys. Glad JH will be president [of B.A.A.S. meeting] at Cambridge.