21 — 
point 23 3 at 760 mm. When cooled, it solidifies into a crystalline 
mass, which does not yet melt at a temperature of -j-ii". My 
examinations confirm these statements." 
Little is as yet known of the constituents of camphor oil which 
are soluble in alkalies. During the distillation process, aldehydes and 
acids collect in the aqueous first fraction, which, however, it has not 
yet been possible to identify further. In the higher boiling fractions 
eugenoU) is present in a comparatively small quantity. 
When the high -boiling acid portions were further worked up, 
carvacrol was subsequently isolated, in addition to eugenol. It showed 
the boiling point 86 to 88° (2 mm) and was identified by the odour, 
as also by the phenyl urethane melting at 136'°. It would appear 
that the crude fraction of the boiling point 94 to 99° (3 mm) con- 
tains further a second phenol, in addition to carvacrol, as moreover 
a urethane was obtained which melted between 85 and 95°. 
Of the portions soluble in alkalies, about 3 per cent can be 
dissolved in dilute soda solution; they consisted of a mixture of ali- 
phatic acids among which caprylic acid predominated. It was identified 
by its congealing point, -f- 15° C, and its boiling point, 113 to 114 " 
(4 mm), as also by the calcium and silver salts, which gave the follo- 
wing analytical figures: 
Calcium salt. 
0,3111 g of the air-dry substance yielded, at 110°, 0,0150 g O, 
and left behind after heating 0,0516 g Ca O. 
0,5827 g treated likewise, yielded 0,0288 g Hg O and 0,0956 g CaO. 
Found: Calculated for 
I II (C8Hi5 02)2 Ca-j-H^O: 
H2 O 4,82 4,94 5,23 per cent 
Ca , 11,85 1 11,63 „ 
Silver salt. 
0,3160 g after heating yielded 0,1364 g Ag. 
0,3155 g „ „ „ 0,1365 g „ 
Found: Calculated for 
I II CeH^.O^Ag: 
Ag 43,16 43,26 43,03 per cent. 
Bericht April 1886, 5. 
