Is studying vesicles. JH's son [Alexander] may yet get Royal School of Mines appointment.
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Is studying vesicles. JH's son [Alexander] may yet get Royal School of Mines appointment.
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.
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.
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.
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.