An attempt has been made to analyze the events occurring in the anal phase of psychosexual development, and to correlate the adult expressions related to these infantile experiences. In addition, consideration has been given to the complicated relationship between the oral, anal and genital psychosexual phases of development, with particular attention to the influence of the anal phase on each of the other two. On less certain ground is based the consideration of the oral influences on the anal phase, an influence which certainly exists in potent form, as illustrated in a reaction of guilt over oral aggressions which is subsequently expressed by diarrhoea. In such an instance the oral expression determines the anal response. Similarly, it is

probable that anal aggressions might be substituted for abortive oral aggressions.