— 43 — 
is precipitated from this solution by acids; the crystals thus ob- 
tained melt at 184°. On oxidation with chromic acid mixture, a 
body is formed with the melting point 45°. From this Tardy con- 
cludes that his body is identic with thymohydroquinone. The latter 
melts at 145°, and on oxidation yields thymoquinone of the melting 
point 48°. The crystals obtained with hot potash liquor correspond 
with oxythymoquinone, which is formed when monobromthymoquinone 
is treated with potash liquor; it melts at 187°. 
Fennel Oil, Galician. In this case Tardy has had to deal 
not with a normal oil, but with the waste oil from the manufacture 
of fennel oil stearoptene. It rotated 39^52' to the right, showed on 
cooling to — 18^ a few ("quelques") crystals, and contained no alde- 
hyde. There were found: i. a dextrogyre turpentine-like hydrocarbon; 
2. a dextrogyre terpene hydrocarbon, which Tardy without evidence 
declares to be phellandrene; 3. fenchone in large quantity; 4. methyl 
chavicol in small quantity, and 5. anethol. 
In discussing the properties of fenchone, Tardy describes a number 
of compounds of fenchone with phenols; these will be referred to 
again under '^fenchone" in the "Notes on recent scientific work". 
Galangal Oil. From the hitherto unknown constituents of this 
oil, Schindelmeiser^) has isolated d-pinene, and identified this body 
by the nitrosochloride and the nitrolpiperidide. He farther obtained 
from the fraction of the oil boiling between 230° and 240°, (which 
at 20^ had the specific gravity 0,932, the refractive index 1,4922, 
and in a 100 mm tube showed a rotation of — 27^12'), a viscid 
hydrochloride boiling at 145° to 150^ (10 mm), which congealed upon 
cooling, and which, after frequent recrystallisation from alcohol and 
water, showed the melting point 51°. A determination of chlorine led 
to the formula H24 • 2 H CI. As up to now no dihydrochloride of 
the above melting point has been known of any sesquiterpene, the 
author believes thas it is here a question of a new hydrocarbon. In 
the higher boiling portions (boiling point 274° to 276°) the presence 
of cadinene is suspected. 
Geranium OiL The African oil is at present still kept at a high 
price, and appears to have a tendency to remain at this level during 
the present season; on the other hand, according to reliable reports, 
a great deal more has been planted out this year, so that under normal 
conditions a large crop may be expected in 1903. In this connection 
there are already lower offers for contracts running over several years. 
Reunion geranium oil has undergone a fairly considerable drop, 
caused by the accumulation of large stocks at different European ports. 
^) Chemiker-ZeituDg 26 (1902), 308. 
