Letter, Percy Edward Kent, University College, Nottingham, to Percy George Hamnall Boswell He had gained the impression that Boswell was using a later (1926) copy of Gregory's 'Rift Valleys', but Kent may have made a mistake in this. He would be glad if Boswell could send some details. The lithological specimens have arrived in England. They can be dealt with at Nottingham in a superficial way as there is no good petrologist. He asks if Boswell can recommend someone to give assistance. 27 October 1935