“…The first evidence in support of ibis view came from the finding th at the BMR tended to be low in about 50% of schizophrenic patients (Farr, 1924, Bowman and Fry, 1925, Langfeldt, 1926, Hoskins and Sleeper, 1929a, Lingjaerde, 1933. The work of Gjessing on periodic catatonia has stim ulated much interest in this field.…”