- 48 
unmistakable odour of geraniol. The phenyl urethane crystallising from 
petroleum ether in the form of needles, melted at 80° to 81°. 
The fractions boiling at 93° to 94°, 94° to 103^, and 103^ to 
106^ (7 mm), were rich in esters of geraniol; their saponification 
numbers were on the average 170. By repeated careful fractionating 
we succeeded in isolating among others a fraction of the boiling point 
100° to 102° (8 to 9 mm) the specific gravity 0,9125, and the saponi- 
fication number 210,6. The latter corresponds to a content of 
73,5 per cent, of an ester Q^H^yO* COCH3. The alcohol of the 
boiling point 102° to 109^ (8 to 9 mm) resulting from this on saponi- 
fication, was recognised by the odour as geraniol. When triturated 
with powdered calcium chloride, it formed a solid cake. From this 
solid compound, purified with petroleum ether, there was regenerated 
with water pure geraniol of the following constants : boiling point 
105° (8 mm); specific gravity 0,8825; optical rotation Qjy = — 0^2', 
The melting point of its diphenyl urethane was found at 81° to 82^. 
The mixture of acids liberated from the saponification -liquors of 
the above-mentioned fractions, passed over between 105° and 230°. 
The bulk of this consisted no doubt of acetic acid, whose pungent 
odour was characteristic of a fraction boiling at 110° to 120°. The 
silver salt, however, gave figures which did not completely agree with 
those required for silver acetate. In spite of this, there is no room 
for doubt that the salt analysed represented mainly acetate of silver. 
The figures of the silver salt crystallising from water in well-developed 
needles, were as follows: — 
0,3227 g of the substance yielded 0,2050 g Ag. 
Found: 63,53 per cent. Ag. Calculated: 64,67 per cent. Ag. 
The difference between the value found and that required may 
no doubt be explained by a slight admixture of a salt with a lower 
silver-content. The fractions 130° to 170°, and 170^ to 200°, gave 
values which point to butyric and valeric acids respectively. Both 
these acids have previously been detected by us in lavender oil. An 
acid boiling at 200° to 230° formed a silver salt, whose content of 
silver agrees with that of silver caproate: — 
0,2284 to substance left 0,1108 g Ag. 
0,2404 „ „ „ „ yielded 0,2804 g CO2 and 0,1025 g O. 
Found : Calculated : 
C = 31,81 per cent, 32,29 per cent. 
H = 474 „ 4.93 
Ag = 48,51 „ „ 48,43 „ 
According to the above-mentioned results, lavender oil contains, in 
addition to free geraniol, also the latter's acetic and caproic esters. 
