— sa- 
in that publication he again claims priority for having accurately 
defined the constitution of the various hydrocarbons C^qH^qj formed 
from fenchyl alcohol and fenchyl chloride respectively. He is further 
of opinion, that, as he had conceived the idea of studying the iso- 
merisation of secondary hydroaromatic alcohols into tertiary, he had 
also the right to include fenchyl alcohol in the sphere of his examina- 
tions, and that therefore there could be no question of an unauthorised 
invasion of Wallach's sphere of action. 
With regard to the remark made by us in the same place, that 
zinc chloride as a substitute for sulphuric acid in the hydration of 
hydroaromatic hydrocarbons had been used by Ertschikowsky long 
before Kondakow, we wish to state, in accordance with a communi- 
cation made by the latter^), that the experiments in question were 
made by Ertschikowsky at the instigation of Kondakow. For this 
reason, Ertschikowsky cannot be designated as the one to whom the 
priority for the use of this method is to be credited. 
Phellandrene. According to a previous statement by P e s c i , 
when phellandrene nitrite is reduced with zinc and glacial acetic acid, 
a diamine boiling at 209° to 215° is formed, which is distinguished 
by a platinum double salt almost insoluble in water. As Wallach 
has already established, phellandrene nitrite from eucalyptus oil yields, 
in addition to non- volatile basic compounds, a base which not only 
boils 40° to 50° higher than stated by Pesci, but which also shows 
a totally different behaviour. An examination recently made by 
Wallach in which original preparations by Pesci were available 
for comparison, has now shown that the compounds which Pesci had 
obtained from the phellandrene of oil of water fennel, differ from those 
which can be prepared from the phellandrene of Australian eucalyptus 
oil This is all the less remarkable, as O. Schreiner^) has mean- 
while called attention to the fact, that from . the phellandrene of euca- 
lyptus oil nitrites of different melting points can be obtained. 
If the phellandrene nitrites, obtained on the one hand from euca- 
lyptus phellandrene, and on the other from the phellandrene of water 
fennel, are reduced according to the method indicated by Pesci, there 
are obtained from both nitrites diamines which boil at 250^, but which 
in respect of the formation of salts behave in a totally dissimilar manner. 
The phellandrene diamine from eucalyptus oil namely yields a diffi- 
cultly soluble monohydrochloride and a readily soluble platinum double 
salt; the diamine from oil of water fennel, on the other hand, yields 
a readily soluble hydrochloride, and a platinum double salt which is 
^) Journ. f. pract. Chemie 11. 66 (1902), 479. 
^) Liebig's Annalen 324 (1902), 269. 
^) Compare Report October 1901, 61. 
