— 53 — 
The above-described sesquiterpene alcohol, and also the two ses- 
quiterpenes derived from it, do not correspond in their physical con- 
stants with any of the hitherto-known isomers. The further identification 
of the two new sesquiterpenes by means of a crystalline derivative, 
unfortunately did not succeed. 
By hydratation of the terpenes of the oil of Eucalyptus globulus, 
Bouchardat and Tardy ^) had obtained terpineol, isoborneol, and 
fenchyl alcohol. We have made the same experiments with a terpene- 
fraction of the same oil (boiling point 154° to 159^; — "hs?^)* 
and have been able to confirm on the whole the observations made 
by Bouchardat and Tardy, — but up to the present we have not 
succeeded in obtaining fenchyl alcohol by heating a terpene-fraction 
of the boiling point 155° with benzoic acid to 1^0^, The high 
rotatory power of the individual terpene-fractions (ap = 37^ to 39°) 
is probably not a characteristic feature of the pinene, but on the con- 
trary due to an admixture of camphene, which latter could also be 
readily detected in the fractions boiling about 155°. 
In the portions boiling about 130°, Bouchardat and Oliviero^) 
have detected amyl alcohol, without, however, deciding whether it was 
a question of normal or of isoamyl alcohol. By the purification pro- 
cess usual for primary alcohols, we obtained, by means of calcium 
chloride, amyl alcohol of the constant boiling point 131^, which formed 
with carbanil a urethane of the melting point 52° to 53°. As the 
urethane of the technical amyl alcohol possesses the same melting 
point, and as a mixture of the two did not lower the melting point, 
it is here clearly a case of isoamyl alcohol. When the portions boiling 
about 140°, which showed the saponification number 38, were freed 
from terpenes by oxidation with permanganate in the cold, the re- 
maining oil possessed distinctly the characteristic odour of amyl acetate; 
unfortunately the quantity available was too small for a chemical 
demonstration of the presence of the latter. 
It is of course well known, from the numerous observations which 
have now been made for a long time chiefly in the Roman Campagna, 
(also in Algeria and the United States), that the eucalypts possess in a 
high degree the property of drying up marshy districts, and that they 
therefore indirectly provide active means for the reclamation of the 
land, and for combating malaria. From this property of the tree it 
had been assumed that in a corresponding degree the leaves would 
^) Compt. rend. 120 (1895), H^T- 
^) Bull. Soc. chim. III. 9 (1893), 429. 
