Recent articles have urged physicians to give increased attention to the use of cytologic and histopathologic technics in the detection of precancerous and cancerous endometrial lesions, since there is an increasing incidence of malignant disease at that site. A routine cervicovaginal smear is inadequate to diagnose cancer of the endometrium. This paper describes a technic for rapid smearing and fixation of endometrical cells. The method of obtaining endometrial cytologic and histologic material is by the use of a helix. A report on 1,748 endometrial cytologic smears is given.