In some instances a more detailed retrospective account was taken, which may throw some light upon the interferences with the intellectual processes with which we are now concerned. Emma K., whose case need not be taken up in detail, had a typical marked stupor which lasted for nine months, preceded by a bewildered, restless, resistive state for five days. She was in the Institute ward for the first four months, including the five days above mentioned; later in another ward. When asked what was the first ward which she remembered, she mentioned the one after the Institute ward, and when asked who the first physician was, she mentioned the one in charge of the second ward. However, when taken to the Institute ward, she said it looked familiar, and was able to point to the bed in which she lay, though somewhat tentatively. The same rousing of memory occurred when the first physician, who saw her daily, was pointed out to her. She remembered having seen him, and then even recalled the fact that he had thrown a light into her eyes, but remembered nothing else. This observation would seem to show that with some often repeated or very marked mental stimuli (throwing electric light into her eyes) a vague impression may be left, so that it may at least be possible to bring about a recollection with assistance, whereas spontaneous memory is impossible. In another instance, the patient was confronted with a physician who had seen a good deal of her. She said that he looked familiar to her, but she was unable to say where she had seen him. Here then again evidence that a certain vague impression was made by a repeated stimulus.