About an increase in sun spot activity.
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About an increase in sun spot activity.
Note to accompany the reported observations of JH's son John.
Thinks it would be best to send his son's letter to G. G. Stokes at the R.S.L. Cannot give a positive opinion on WH's plan for seeing the prominences. Finds some discrepancies in the Report of WH's paper on Sirius and the paper itself.
Suggests the planet Mercury may be a good subject for his spectroscopic experiments. Gives comments and explanations on his proposals. May like to communicate the results to the R.A.S.
Note to correct calculations in an earlier letter [see JH's 1869-9-20].
Burn his [last] letter as he made a blunder in his geometry. Cannot imagine how he made the blunder. Gives new formulae for observing Mercury.
Comments on EH's 'Magic pictures', which JH said he produced and described in a paper twenty-six years earlier; JH is however unable to explain the process chemically.
Replies to JH's 1865-5-16, expressing thanks for materials sent. Comments on temperature.
Thanks for the beautiful engine-turned patterns; they exceed in beauty anything he has seen before. Should think he would have no difficulty in polishing reflectors.
Thank you for his letter. There are no misprints or conflicting statements in his Familiar Lectures. Explains the various points.
Returns his Australian friend's speculations. Comments on these theories regarding atoms, etc., and gives other books and articles showing that his theories are not unique.
Regrets delay in acknowledging his Notes on the Great Pyramid; it was due to a temporary loss of the work. Finds HJ's theory on the inclination of the passages very practical. Comments on the accuracy of the pyramid builders.
Returns the petitions. Regarding the one for the maintenance of the church rates. Has qualms about signing this as he does not entirely agree with some of the statements.
His son informs him of the projected series of lectures at the Royal Institution on weather forecasting and meteorology. Comments on this.
Grieves to say that he will be unable to attend the meeting at the Royal Institution to honor Michael Faraday, as his health is so poor. Thinks Faraday was a great man in all ways.
Best wishes on Mrs. Jones's birthday.
Thanks for his paper on amalgams. Regarding the amalgam of iron, he pointed it out many years ago in his Bakerian lecture. Would be interesting to experiment further with iron in solution of mercury.
Many thanks for Mrs. King's volume of poetry. Comments on some of the poems.
Has now received his pamphlet. Does not agree with its findings, but will submit it to the R.S.L., though it cannot be printed in R.S.P.T. as it has already appeared elsewhere. Comments on some of EK's theories.
Carefully describes how to pack actinometers being shipped to India.