It is interesting at the present time to notice that disorders of the mind are being considered from a broader point of view. No longer is it reckoned sufficient to enumerate the psychic symptoms and to label the case accordingly. In the scientific journals it is not unusual to find the statement that a certain case does not fit into any division of our present-day classification. It is recognised that to describe a case as an atypical example of a disease is equivalent to saying that some factor has escaped our notice, or is one we cannot explain; that ætiology, from the psychogenic as well as the pathogenic point of view, must be considered, and that bodily and nervous symptoms may be as much a part of the illness as are the psychic; in fact, these last are often merely a symbol expressing some change in the function of an organ outside the brain.