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Acknowledges receipt of JH's letter and fungi spore specimens. The letter was read and specimens exhibited at last meeting. Offers thanks.
Will forward information on spectrum analysis when he receives it. Asks if JH is interested in studying the photochemistry of the sun during the upcoming eclipse.
Pleased that JH's son [John] will examine the chemical intensity of the sun during the eclipse. Offers suggestions for successful experiment. Sends paper regarding chemical intensity at the tropics.
Thanks HR for sending HR's book on spectrum analysis [Spectrum Analysis, 1869]. Praises that publication.
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