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Some geological samples have been lost on the way to England; JH comments on his ideas of the effect of the earth's hot core on the construction of the earth's crust.
Can raise no objections to being president of the B.A.A.S. for 1845, but will be unable to be in York this year.
Sending details of his idea for a new projection of the sphere. If printed will need the maps re-engraved.