I can only say that I made my observations during normal deep and healthy sleep, and that in 352 cases I had a full recollection of my day-life, and could act voluntarily, though I was so fast asleep that no bodily sensations penetrated into my perception. If anybody refuses to call that state of mind a dream, he may suggest some other name. For my part, it was just this form of dream, which I call “lucid dreams,” which aroused my keenest interest and which I noted down most carefully.