JT has suggested that JH's son [Alexander] be appointed to position in Royal School of Mines, but colleagues, unwisely, JT thinks, want someone more well-known.
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JT has suggested that JH's son [Alexander] be appointed to position in Royal School of Mines, but colleagues, unwisely, JT thinks, want someone more well-known.
Gustavus Hinrichs is also a [not highly regarded] correspondent of JT’s; he will put GH’s papers on the table at Royal Institution to ease CD’s conscience.
Dined with the Asa Grays at Hooker’s. Told Mrs Gray that CD’s ill health was a benefit because it caused him to ponder a great deal.
Is studying vesicles. JH's son [Alexander] may yet get Royal School of Mines appointment.
Observations on subjecting carbonic acid to concentrated beam of an electric lamp. Records experimental result so far. Interested in ordinary dust particles under electric light.
Continues experiments with carbonic acid and electric light [see JT's 1868-11-30], hoping to 'explode' idea that atmosphere's polarization is due to reflection by air particles.
Continues experiments with carbonic acid and electric light [see JT's 1868-11-30], suggesting possible cause of blue cloud color and eventual whitening of light.
Asks JH to review paper on blue color of sky, polarization of skylight, and polarization of light by cloudy matter.