Expresses his pleasure at RH's new position at the Museum of Economic Geology.
Expresses his pleasure at RH's new position at the Museum of Economic Geology.
RH's experiments are extremely interesting and deserve to be pursued. Comments on experiments made by Michael Faraday and others relating to the formation of crystals in a magnetic field and the effect such crystals have on polarized light.
No summary available.
No summary available.
Does not believe JH can help RH in some delicate matter. JH talks about photographic chemistry, including passing on information from A. C. Becquerel.
Mentions RH’s book on light [Researches on light in its chemical relations, 2d ed. (1854)]. Asks about coloured glass used in experiments on plants.
Mentions experiments on plants involving coloured glass. Encloses correspondence from glass maker and asks advice.
Encloses a sketch of the principal events in his life [for RH’s memoir on CD in Walford, ed., Portraits of men of eminence (1863–7)].
In response to RH's 1867-10-28, JH sends a list of his writings on astronomy.