On gold and other monetary matters.

Has finished his essay and returns to the subject of gold. Cites articles.

J. C. Symons is spreading locally false theories about the rotation of the moon. Would like JH's views on this.

Regrets that he thinks the faith of the public in astronomy should be shaken by the errors of J. C. Symons. Gives the theory of the rotation of the moon.

Is grateful for the copy of his Essays. Query about measuring the focal length of a double object glass. Gives results of his recent observations. Hopes accounts of JH's son are good.

Thanks for engravings of Saturn and Jupiter; would like to see an astronomical picture book produced.

Is pleased that JH approves of his drawings of the planets. Hopes to publish some drawings of the other planets in the future. Has moved his observatory but hopes soon to start observations. Unable to comment on Otto Struve's observations.

Thanks for photograph of the moon.

Has not been able to go to Kew Observatory yet. The photoheliograph has to await John Welsh's return from Scotland. A reflector with a diagonal mirror would be suitable for celestial objects. Has now removed to Cranford.

Thanks for the magic square, which he is now returning. Seems no end to the possibilities of such squares.

JH has got hold of the explanation about central forces. Need not worry about Elizabeth Baily; he will see to that. Do not reject any letters; they may be important in the future. Gives one of his own theorems.

Offers AD a puzzle and JH's solution to AD's problem about a body revolving in the evolute of an ellipse. On sending Francis Baily's correspondence to Greenwich.

Sees by the announcement that he is to be out in April. Is there anything he can do in the way of proof reading? Is preparing answers to 65 queries of S. J. Loyd (1st Baron Overstone) on the decimal coinage.

Reading proofs of JH's Essays Q. E. R.; working on an article on meteorology.

Sending a little joke on a political theme. Further regarding a query of JH's on a rabbit. Gives a problem on a polygon. Meteorology is peculiar as weather does not appear to be governed by any laws.

On some odd results JH has arrived at about P. S. Laplace's barometric formula.

Returns his cancel, which he found very amusing. Mrs. De Morgan is now at Hampstead suffering from an incurable complaint. Further comments on the beats of musical consonances and Robert Smith's theories.

On magic squares.

Hopes his health is improving. Where can he find the article expressing adjectives in algebraic symbols? Went to the R.A.S. in July and found much as usual. Mrs. De M. now at Hythe with the children. Elizabeth Baily appears to be in excellent health.

Regarding the possibility of decimal coinage. Washes his hands of adjectives expressed in algebraic form. Has received good news from India.