A qualitative and qwantitative study of the glycosidnl content of the different organs and parts of Citrullus colocynthis SCHRAD. were undertaken. Qualitative study revealed the presence af a-elateri~r 2-D-glucopyranoside and its aglycone in all organs; cucurbitacin B, I , and'L (both free and glycosidal forms) in stents, leaves, and fruits. A suggested procedure for the estimation of a-elateri...