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Introducing Benjamin Travers, who intends visiting the Cape of Good Hope. Would welcome advice from JH.
Asks: for name of instrument maker JH recommends for construction of actinometers; which hydrogrameters should be taken to Mackenzie's River; and whether JH has any experiments he would like done in America.
Has just seen his letter [apparently requesting an article on mineralogy for the Admiralty Manual] on returning to his office. Is very busy at the moment with a survey of coal for George Eden (Earl of Auckland), but could probably help, given time.
Gratitude for receipt of JH's Cape Results by observatory of Central High School of Philadelphia.
[George Eden] Lord Auckland seeks meteorological 'reports.' CW will contribute instructions on atmospheric electricity, photometry, and optical meteorology. W. R. Birt will report on meteorological instruments and wind observations.
All scientists named by GE, except [Adam] Sedgwick, will contribute to Admiralty Manual, but only one has a paper already prepared.
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