THE ALKALOID OF BERBERIS UMBELLATA. WALL. PART II.

Umbeilatine is shown to possess an imino methyl group. Of the 8 atoms of oxygen, 4 were shown in a previous communication to be present in a methylenedioxy and two methoxy groups, the remaining 4 are now proved to be present as OH groups. A comparison of the properties, absorption curves and derivatives of Umbellatine with those of berberine has been made ; it has been concluded that methylenedioxy-tetrahydro. isoquinoline skeleton forms a part of the umbellatine nucleus. Umbellatine is mentioned to be the chief alkaloid of the Himalayan \(Berberes\), \(e.g.\) \(insignis\) \(B\). \(nepalcnsis\) \(B\) \(lyclum\) and \(B\) \(Wallichiana\) etc., and some of its salts are described