“…The therapeutic efficacy of lithium ions in some manic depressive psychoses seems well established (Baastrup, Poulsen, Schou, Thomsen & Amdisen, 1970; Coppen, Noguera, Bailey, Burns, Swani, Hare, Gardner & Maggs, 1971;Hanna, Jenner, Pearson, Sampson & Thompson, 1972). The mode of action is, however, still obscure.…”