Requests that JH write a few lines to an old friend of HK's in Germany.
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Requests that JH write a few lines to an old friend of HK's in Germany.
Offers to lecture to JH's 'association.' Describes microscope equipment designed by EW and son, who now manufactures portable telescopes. Diagrams and questions about new object glasses and compound lenses. Offers free telescope to Alexander Herschel. Progress of Atlantic Cable offers good lecture topic for next session.
Thanks JH for letter and explanation. Will contact Charles Pritchard for details. Please forward 'enclosed' to [Alexander Herschel].
A note to accompany the sending of some papers to JH and the R. A. S.
Will expect JH on Monday.
Replies to JH's letter of 1865-5-25 concerning the altitude/temperature equation.
Comments that A. J. Fresnel's papers in the Annales de chimie are really incomplete sketches of theories, which he developed later. Theory clearly stated in [Felix] Billet's Traité d'optique physique. Friend of his at Trinity College has produced a peculiar liquid.