There is need today for further clinical and pathologic studies of presenile and senile psychoses which are atypical and do not fall into the present recognized pathologic categories. There are already reports of several examples in the literature, but little can be done to classify them or to solve the problem of the cause until further case reports are available. Moreover, there is still much confusion as to what constitutes, on the histologic side, a normal or an abnormal involution. It is with these needs in mind that we are persuaded to report the following case, which we believe is unusual. The paucity of abnormal histologic observations in this instance is one of the reasons for placing it on record.
REPORT OF CASE
History.
—A woman aged 60 was admitted to Shenley Hospital on May 21, 1936. The history was obtained from the husband, who reported that for as long