The species Piper camphoriferum, C. DC, heretofore unknown, was described by C. de Candolle in 1909. Its oil was distilled by H. Thorns with a yield of 1,11 p.c. and had the following properties: d20o 0,9500; aD +19°21'. Under a pressure of 25 mm. about one third of the oil distilled over below 115°. In these fractions the presence of d-camphor (m. p. of oxime 118 to 119°) and of borneol (m. p. of phenylurethane 138°) was established. Moreover the oil contained terpenes, acids and phenols, also a sesquiterpene alcohol (analysis; aD + 5°; nD 1,50208).
1) Paper read at the 76. Vers. D. Naturf. u. Arzte in Breslau; Pharm. Ztg. 49 (1904), 811. - Arbeiten aus dem pharmazeutischen Institut der Universitat Berlin 2 (1905), 121.
2) H. Thoms, Uber Maticoblatter und Maticoole. Apotheker Ztg.24 (1909), 411. - Arch, der Pharm. 247 (1909), 591.