The Isofenchene obtained by Bertram and Helle6) from Isofenchyl alcohol was recognized byWallach7) as D-d-fenchene.

1) Wallach, Liebig's Annalen 300 (1898), 313.

2) Wallach, Ibidem 302 (1898), 376.3) Ibidem 362 (1908), 182. 4) Ibidem 199.

5) Bertram and Helle, Journ. f. prakt. Chem. II. 61 (1900), 293; Report of Schimmel & Co. October 1898, 48; April 1900, 56.

6) Journ. f. prakt. Chem. II. 61 (1900), 303.

7) Liebig's Annalen 362 (1908), 193.