Has had no reply to his letter of 29 March requesting his opinion on a memoir on the solar system. Would be grateful for a reply.

Has sent a collection of his own communications for JH via the Foreign Secretary of the R.S.L.

Was grateful for his kind letter. Doubtless he has received further of his papers by now, including the one on the meteor of Oct. 1863. Sends a note on two lines of the Iliad. Has heard interesting news of Alexander Herschel's labors.

Has received his book on symbolism from the publishers. Comments on some of its views. Feels he has been treated a little harshly.

Thanks for his kind note and his tracts on Atoms and Forces. Thinks J. S. Mill's Logic is dangerous. Hopes he will read his book thoroughly and not be too critical of his astronomy.

Sending another copy of a new edition of one of his books. Thinks he stated too strongly his objections to other people's work in his previous edition. Hopes JH will find time to read it.

Thanks for his books. Encloses one of his own pamphlets on Atoms, which will show his personal view of mind versus matter. Comments on some of Haig's terminology.

Thanks for his letter and amusing pamphlet on atoms. Comments on their use of certain terms. Does not think their views differ radically. Thinks heat is a form of movement.

Is very pleased that JH has accepted his little volume. Is sure JH would have made a success of a similar work. Behavior of animals.

Regrets he should have felt so much anxiety about Maria (HH's wife and JH's daughter), but she is progressing well. Have settled down well in their new house.

About the solution of algebraic equations and JH's previous work on this topic.

Is grateful to JH for calling attention to his paper on analysis. Has forwarded his letter to George Boole. Hopes he can quote it in his paper for the Manchester Philosophical Society. Sends a copy of his memoir from the R.S.P.T.

Is writing an article on the life and work of George Boole and would like JH's advice on one of D. F. Gregory's references.

Has not had time to finish the George Boole paper, but the biographical part is in print. Will send him the complete article when it is finished.

Comments on analytic symbolism in mathematics.

Expresses thanks for RH, in a paper on George Boole in the British Quarterly Review, giving JH credit for having published 'my introduction of the mode of separation of the symbol of differentiation from the differentiated function and executing on it operations analogous to those of common algebra.'

Intends applying for the chair of mathematics at Queen's College, Cork and would be grateful for a testimonial from JH.

Is grateful for the pamphlets on Standards and will inform him of any decisions made by the Committee. Comments on the various national standards and systems used.

Thanks for the parliamentary papers, which the Committee have found very useful. Will soon forward his report, which recommends the metric system.

Will give him great pleasure if he can assist J. Parkhurst in any way, but regulations in Messrs. Green's ships will preclude him from their service. Met Margaret Brodie Herschel at the Stewarts a few days ago.