Copy letter from Robert William Frederick Harrison, to Mr H W Moseley, Registrar, Oklahoma State Baptist College, Blackwell Harrison is not in a position to give them a precise description of 'natural science'. It depends on context. The Royal Society was founded for the 'promotion of Natural Knowledge'. The subjects dealt with by the Society are commonly divided between the Physical and Biological Sciences, the latter are sometimes spoken of as the Natural Sciences, and Natural Philosophy is the old British term for the Physical Sciences. This letter is of course an unofficial one. 1 March 1910