Since writing to JH he has taken medical advice and decided to leave his son at Christ's Hospital for the time being. Gave a lecture at the Royal Institution on Friday evening.

Regarding tides in the atmosphere. Suggests a possible way of measuring these tides. Has never seen the subject mentioned.

Grateful for JH's help in making a successful claim upon Her Majesty's Government.

Many thanks for his astronomy [Outlines Astr.]. Will read it later when he has more time.

A note of thanks for a copy of JH's Outlines Astr.

Note to present JH with a copy of AS's latest work.

Thanks JH for his support of Henry Prinsep in his attempt to be elected [to seat of directors of the East India House].

Describes usual method for interpolation of altitudes at sea. JH's graphic method probably would be practicable.

Is sending a communication to JH for insertion in the R.A.S.M.N. Seems to be some problem with understanding YV's calculations of the orbits of double stars, so YV explains his method.

Is looking forward to receiving a copy of JH's Outlines Astr.; describes an aurora AP had seen at Alnwick Castle.

Sends extracts from book by Mr. Hopkins on the solar system. Has his own theories on the Augustan calendar proved to his own mind. No authority for giving the name Saras to the period of 223 lunations.

Is grateful for his Outlines Astr. Comments on its quality and usefulness. Sends the first report of the Board of Mathematical Studies.

Regarding the possibility of a new edition of JH's Treatise Astr. originally published in Lardner's Cyclopaedia. Has found it very useful for his students.

Pointing out some errors in JH's Outlines Astr.

Admiralty Manual is now published and an early copy has been sent by post. Remaining copies will be sent later. Regarding the distribution of other copies, can JH assist with some of the addresses?

Alexander von Humboldt reports reading that Lord Rosse's telescope has resolved the nebula of Orion. Humboldt requests JH's view on the matter. Describes new government.

Before he can exchange appointment of Willy [Herschel] he must find out what his present appointment is. Still thinks of going to St. Leonards and hopes to call on the Herschels. Would like Maria Edgeworth's last letter; misses her very much. Should cultivate Angelica.

Thanks for his letter. Was pleased to hear about the corrections. Points out another error in JH's figures in JH's Outlines Astr.

Thanks for his obliging note. Has already had one from John Murray. Hopes the Admiralty Manual will bear fruit. Has been at Malvern for three months and his health has improved enormously.

Thanks JH for subscription to the Astronomical Club. Discusses JH's objection to use of symbols in works on navigation. Notes that symbols are becoming more common. Requests advice.