=Evidence from abstraction.=—One of the most striking of artificial memory performances is the recovery of the details of inconsequential experiences of everyday life by inducing simple states of _abstraction_ in normal people. It is often astonishing to see with what detail these experiences are conserved. A person may remember any given experience in a general way, such as what he does during the course of the day, but the minute details of the day he ordinarily forgets. Now, if he allows himself to fall into a passive state of abstraction, simply concentrating his attention upon a particular past moment, and gives free rein to all the associative memories belonging to that moment that float into his mind, at the same time taking care to forego all critical reflection upon them, it will be found that the number of details that will be recalled will be enormously greater than can be recovered by voluntary memory. Memories of the details of each successive moment follow one another in continuous succession. This method requires some art and practice to be successfully carried out. In the state of abstraction attention to the environment must be completely excluded and concentrated upon the past moments which it is desired to recall. For instance, a young woman, a university student, had lost some money several days before the experiment and desired to learn what had become of it. She remembered, in a general way, that she had gone to the bank that day, had cashed some checks, made some purchases in the shops of the town, returned to the university, attended lectures, etc., and later had missed the money from her purse. Her memory was about as extensive as that of the ordinary person would be for similar events after the lapse of several days. I put her into a state of abstraction and evoked her memories in the way I have just described. The minuteness and vividness with which the details of each successive act in the day’s experiences were recovered were remarkable, and, to the subject, quite astonishing. _As the memories arose she recognized them as being accurate, for she then remembered the events as having occurred_, just as one remembers any occurrence.[11] In abstraction, she remembered with great vividness every detail at the bank teller’s window, where she placed her gloves, purse, and umbrella, the checks, the money, etc.; then there came memories of seating herself at a table in the bank, of placing her umbrella here, her purse there, etc.; of writing a letter, and doing other things; of absent-mindedly forgetting her gloves and leaving them on the table;[12] of going to a certain shop where, after looking at various articles and thinking certain thoughts and making certain remarks, she finally made certain purchases, giving a certain piece of money and receiving the change in coin of certain denominations; of seeing in her purse the exact denominations of the coins (ten and five-dollar gold pieces and the pieces of subsidiary