In 1882, Cotard published his paper, giving to a group of cases the name of délire des negations, and claiming for them a separate class. These cases are characterised by marked depression of an anxious type. There is moral hypochondriasis—they are lost, cannot live. They are frequently suicidal. They have no head, no body, no organs, etc. All the feelings are of this negative type. As the cases of delusional insanity have become better classified, it has been found increasingly difficult to place them in a definite group.