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Papers relating to Joseph Black, Professor of Chemistry and Medicine at the University of Edinburgh, and Dr George Pearson, lecturer in Chemistry at St George's Hospital, mid to late 18th century, comprising a volume of manuscript notes, by an unknown hand, taken at chemistry lectures by Black and Pearson. Including some notes on natural philosophy.

Papers of the Arden Philosopical Lectures, c 1775-1800, comprising a volume of manuscript lecture notes titled Philosophical Lectures delivered by Mr Arden at Dursley. The notes discuss topics such as electricity, including the work of Dr Benjamin Franklin with lightning rods. The notes also cover the subjects of air and gases, commenting on the work of Dr Joseph Priestley relating to 'fixed airs' (carbon dioxide), 'inflammable air' (hydrogen), the effects of 'phlogiston' on the air, and 'dephlogisticated air' (oxygen). The volume is undated; Priestley's paper on his experiments with airs and gases was published in 1775.