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SCIENTIFIC AND APPLIED PHARMACOGNOSY 



cynth contains, furthermore, a considerable proportion of a-elaterm, 

 but apparently none of the physiologically active /3-elaterin. It has, 

 moreover, been shown that the products obtained from colocynth 



by previous investigators, which were designated " colocynthin," 

 " colocynthitin," etc., do not represent pure substances, but are mix- 

 tures of a very indefinite nature, and that the amount of glucosidic 

 substance in the fruit is extremely small. The substance to which the 



