ABSTRACT
The general faculty of memory, the organic phosphorescence of the nervous elements, is liable to present great modifications, according as it is considered at the different periods of the development of the human being. It goes through successive phases, which are merely more or less direct reflexes of the histological properties of the cells, by means of which it reveals itself. The facility with which they disappear from the memory in certain cases of cerebral disorganization suggests the thought that from the first periods of intellectual development, they are really received and stored up in isolated territories of nerve-cells which serve them as a substratum, in the form of. persistent sensorial impressions. The different modes of sensibility awakened bring with them new ideas and new remembrances, and at the same time excite appropriate reactions. The regions of intellectual activity begin to make more and more use of the excitations which come from the surrounding world to erethise them.
