From matico leaves which were pronounced by Gilg and C. de Candolle as undoubtedly genuine, and from Piper angusti-folium, Ruiz et Pavon, Schimmel & Co. distilled an oil which was examined by Thorns1). After standing for several days, a considerable amount of crystals separated, which were identified as asarone melting at 60 to 61°. From the first fractions about 10 p. c. of terpenes were obtained, however they were not characterized further. From fraction 70 to 71° (13 mm.) cineol was removed by means of concentrated solution of arsenic acid. The higher boiling fractions revealed an increasing methoxyl content, and yielded appreciable amounts of asarone, whereas neither of the two apiols mentioned above could be detected.