We shall later show that when the patient comes out of a stupor the condition may be such that, for a time at least, retrospective accounts are difficult to obtain. It must also be remembered that not infrequently the more marked stupors may be followed by milder states, and it is important, if we wish to determine how much is remembered, not to confuse the two states or not to let the patient confuse them. For example, Mary D. (Case 4), who showed two separate phases, while she claimed not to know of many external facts, also added that she could not understand the questions which were asked. From observation in other cases it seems that in marked stupor any such recollection about the patient’s own mental processes would be quite inconsistent. We have to assume, therefore, that this remark referred in reality to the second milder phase, for which, as we shall see, it is indeed quite characteristic. It is not necessary to burden the reader with other cases, all of which consistently gave such accounts. We see, then, that in the marked stupor the intellectual processes are regularly interfered with, as evidenced by almost complete amnesia for external events and internal thoughts. In other words, this would indicate that the minds of these patients were blank. Inasmuch as direct observation during the stupor adduces little proof of mentation, we may assume that such mental processes as may exist in deepest stupor are of a primitive, larval order. Before we examine more carefully the milder grades of stupor, it will be necessary to say a few words about the retrospective account which the patient gives of intellectual difficulties during the incubation period of the psychosis. As a matter of fact, we find that these accounts are remarkably uniform. While some patients, to be sure, speak of a more or less sudden lack of interest or ambition which came over them, others of them speak plainly of a sudden mental loss. Mary. C. (Case 7) claimed she suddenly got mixed up and lost her memory. Laura A. spoke at any rate of suddenly having felt dazed and stunned. Mary D. (Case 4) said she felt she was losing her mind and that she could not understand what she was reading. Maggie H. (Case 14) began to say that her head was getting queer. We see from this that the interferences with the intellectual processes may in the beginning be quite sudden.