The recent outbreaks of amebiasis have made many physicians "ameba conscious." This added interest has afforded an opportunity to evaluate methods of collecting specimens from the diseased colon. It soon became apparent that a stool specimen sent to the laboratory is not the most desirable material for examination. It is rarely fresh. It is cold. The preparation of a suspension is not a pleasant task and often is very revolting to the technician or physician. Specimens obtained through the sigmoidoscope not only obviated these disadvantages but resulted in many more positive examinations. Paulson and Andrews1 have had similar experiences.
Recently I described a sigmoid aspirator2 for procuring fresh sigmoidal contents. That instrument is particularly valuable in cases of diarrhea, in the preulcerative stages of colitis or in debilitated cases in which a sigmoidoscopic examination is objectionable. However, when ulcerations are seen through the sigmoidoscope, direct aspiration of the