Mental Health

573-0

Letter from Erasmus Darwin to James Watt, 1789/11/20

Darwin writes to Watt to request some details of the Boulton and Watt steam engine for his… read more »

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570-0

Letter from Erasmus Darwin to James Watt, 1790/01/19

Darwin thanks Watt for information about steam engines for The Economy of Vegetationand attempts to rouse Watt from… read more »

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