Much on poetry; for a sonnet on the sun by EC, JH sends some photographs of the sun.
Much on poetry; for a sonnet on the sun by EC, JH sends some photographs of the sun.
Of toads in rocks and stones, and martins in blocks of ice under rivers.
Comments on spelling reform being attempted in Germany and the United States, and being proposed in England.
Comments on the attitude of the French towards the Germans in light of the war.
More remarks relating to French/German relations [see JH's 1871-2-9]. Thanks EC for more poetry and an account of an earthquake she experienced. JH is in poor health.
Comments on several aspects of poetry; further comments on French/German relations [see JH's 1871-2-9 & 1871-3-22].
Thanks and a detailed description of the functioning of a pair of binoculars sent by JD to JH.
Inquires about other sunspot observations made by JH.
Thanks for the photographs WD sent for the dates requested in JH's 1870-4-23.
Comments on sunspot activity; agrees to inclusion of some paragraphs in a paper WD is writing.
Comments on sunspot activity.
Asks AD's advice on an application JH received the previous day. Comments on JH's health.
Writes about JH's health; justifies writing by sending some curves prepared by JH's son Alexander.
Encloses copy of JH's letter to R.A.S. [see JH's 1864-6-29] that accompanied JH's submission of W. L. Newman's tables for determining radii of aplanatic lenses. Suspects that there was more than one volume of tables.
JH will not join subscribers for prizes. Objects to so much emphasis on exhibitions of competitive sports, to the detriment of serious education. Feels young people benefit more from spontaneous exercise.
Requests publication of a notice of the recalculation by H. J. R. Petersen of the Gaussian constants of terrestrial magnetism.
Comments on remarkable solar activity. JH admits he has no theory to explain sunspots.
Thanks WH for materials WH sent, including information about scientific activity in Vienna and papers on meteorites. Recounts some of the history of the Analytical Society. Discusses meteorites and also Homeric references to iron.
Sends a copy of JH's version of the German Rhine Song, which JC requested. Comments favorably on French losses in the Franco-Prussian War. Thanks her for visiting.
Discusses WC's ideas on the causes of oceanic circulation. Notes that wind currents are easier to study than water currents. Glad WC got his specimens of Mediterranean water.