'Haeckel's contention that that protoplasm 'had the ability to receive and maintain the waveform vibrations of the external world' and thereby pass on organic characteristics from one generation to the next achieved great prominence during the late nineteenth and early twentieth centuries. Haeckel further argued that a protoplasmic capacity for the reception and storage of wave-forms endowed cells with psychological capacity. Well into the twentieth century, histologists such as Camillo Golgi, Hans Held, Stephan Apáthy and Albrecht Bethe presented evidence that nerves could link together via continuously connecting organic structures.'