360 Wisconsin Academy of Sciences , Arts and Letters. 
ad II. List 2 : by means of very dilute sulphuric acid (p. 367.) 
Berthelot 3 : action of heat alone, chlorides of zinc, calcium 
strontium and ammonium, fluoride of calcium. 
Tilden 5 : by means of dilute hydrochloric acid, (p. 248. 
Wallach 8 : by means of dilute sulphuric acid, phosphoric 
acid, glacial acetic acid and potassium disulphate. 
ad III. 1 Bouchardat and Lafont 11 : Acetates from pinene and dipen - 
tene. 
Lafont 12 : Acetate from + limonene. 
2 0ppenheim 4 : Dipetene 2 H Br. with silver acetate (p. 154.) 
Oppenheim 4 : Dipentene 2 H I with ammonia (p. 156.) 
List 2 (p. 373.) ) By boiling the dihy- 
Berthelot 3 (according to Oppenheim.) (• drochloride with 
Tilden 5 (p. 249.) ) water. 
Many of these references must be taben with considerable reserve. 
In most cases no pure terpineol was obtained. However, it is to be 
assumed that in all cases more or less of it was formed. 
33 According to Tilden 5 (p. 289) lemon oil contains 10-15 p. c. of a 
substance which has the same boiling point with terpineol and yields a 
dichloride melting at 48°. This 44 natural terpinol ” is stated to be dex¬ 
trogyrate. So called 44 Cajeputol ” is stated to contain a fraction which 
boils above 200°, which is capable of yielding a dichloride melting at 48°. 
Weber (Annalen, Bd. 238, p. 101) separated from cardamom oil a frac¬ 
tion 205-220°, which yielded dipentene dihydrochloride, melting at 52°. 
He did not succeed in making the carbanil reaction. 
Watts (J. C. S. vol. 49, p. 316) has sufficient faith in an insignificant 
color reaction to conclude from it the presence of terpineol in the oil 
from the leaves of Citrus Limetta. 
Bertram and Gildemeister (Archiv d. Pharm. Bd. 228, 485), assume the 
presence of terpineol beside borneol in the fraction 200-220° of kesso-oil 
(valeriana officinalis, var. angustifolia.) They obtained from this frac¬ 
tion dipentene dihydriodide melting at 76° • The oil also contains 
dipentene. 
- Kwasnick (Berichte, Bd. 24, p. 81) reports as follows of a fraction 
from Kuro-moji-oil (Lindera fericia, Bl.): 44 Eine angenehm nach Flie- 
derbluehten riechende Fluessigkeit C 10 H- 18 O, siedet bei 218° und 
wurde durch sein Verhalten gegen Chlorwassertoff und gegen Brom, sowie 
durch sein schoen hrystallisirendes Jodid, welches bei 75-76° schmilzt, 
identificirt.” This oil also contains -j- limonene, dipentene and — carvol. 
