A letter of introduction on behalf of the Prescott family.
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A letter of introduction on behalf of the Prescott family.
Forwarding copy of paper by Ernst F. W. Klinkerfues; EK purports to show that movement of a star toward or away from an observer will affect its refraction in an achromatic prism.
Comments against the paper of Ernst Klinkerfüss about observations of dispersed star light [see JH's 1866-2-24].
Agrees with GS's assessment of Ernst Klinkerfüss's paper [see GS's 1866-2-27].
Further comments on Ernst Klinkerfüss's paper, in response to JH's 1866-2-28.
Comments further on Ernst Klinkerfüss's work [see JH's 1866-2-28]; on the behavior of light emitted by an electric spark.
Comments on a letter GS received from Ernst Klinkerfüss, which leaves GS convinced of the basic correctness of the views of GS and JH.
Carefully describes how to pack actinometers being shipped to India.
Acknowledges receipt of paper on nebulae.
On a correction to a report [JH's obituary on William Whewell].
Preparing for total eclipse of sun in 1868. Conferred with William Huggins about making spectroscopic analysis of red protuberances. Asks JH's opinion.
Asks JH's opinion on matter of purchase of expensive telescope for solar eclipse (1868) and other observations by William Huggins.
Describes problem with spectral lines in telescope while trying to understand William Huggins's results.
Comments on impossibility of increasing the intrinsic illumination of a source with a telescope; how to obtain the spectrum of red flames of the sun.
Believes that expensive telescope wanted by William Huggins is unnecessary for the intended purposes [see GS's 1867-5-3]; JH offers a telescope of his own to R.S.L.
Agrees reluctantly to write obituary notice of William Whewell; wishes he had been asked earlier.
Sends list of tutors at Trinity College contemporary with William Whewell; comments on telescope needed for eclipse viewing.
Will not apply to government for money to purchase telescope for observing [1868] eclipse. William Huggins believes that larger telescope is needed. Would JH's son [John] make these observations [for R.S.L.]?
Comments on the time needed by JH's son [John] to perform observations requested by R.S.L.; thanks for list of tutors [see GS's 1867-5-13].
Note accompanying JH's obituary notice of William Whewell.