Prof. Naville, eminent as a philosopher and now set 92, here describes the hallucinations to which he has lately become subject. He first observed them during the summer of 1908, when staying at his châlet on Mont Salèoe (at a height of 1,200 metres). On returning to his laboratory in Geneva they reappeared after an interval, becoming still more frequent. He is in good health considering his age. Sight is also good, except for some difficulty in reading and writing; ophthalmic examination revealed no signs of disease. He is not duped by his hallucinations, though he often requires the negative evidence of other witnesses to distinguish them. They are exclusively visual, unaccompanied by any special sensations, and they cause no trouble or anxiety, but are simply an occasion of interesting study. They show no special relationship to meals or to time of day, and they appear equally in fine or dull weather.
Email your librarian or administrator to recommend adding this journal to your organisation's collection.