Mentions some chemical experiments on which JH has worked; hopes EC will exhibit his experiments for R.S.L.
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Mentions some chemical experiments on which JH has worked; hopes EC will exhibit his experiments for R.S.L.
Describes chemical experiments carried out by JH on corundum. Attempts to interpret these experiments.
Praises EC for 'amazing experiments' published in [William T.] Brande's journal [Quarterly Journal of Science and Art]. Wishes EC's publication had appeared in R.S.P.T. Has an experiment to show EC.
Thanks EC for his interest in a paper JH submitted to the Geological Society. JH has come to question some of his observations and to recognize that J. J. Berzelius anticipated JH's recognition of the acid nature of silica.
Reports on some chemical results obtained by JH.
Sending EC a specimen that W. H. Wollaston describes as 'the most intractable substance by fire' he has ever seen. Discusses its properties and possible chemical composition.
Returns with thanks EC's specimen of Island Crystal. Also discusses specimen of titanium lent by EC.