— II — 
I. Fractional destination of ''Shu-yu". 
Apopin oil represents a colourless, clear oil, which turns brown 
on exposure to the air. Its specific gravity ascertained with the pycno- 
meter, is 0,9279, at 15° C. When examined with the polarisation 
apparatus according to Wild, this oil shows, in a tube of 100 mm, 
a rotation of 17° 19' to 17° 06' to the right. In the fractional 
distillation of 1000 parts by weight of the oil, the following fractions 
were obtained: 
1. up to 180° 29 parts 
II. i8o°— 190° 63 „ 
III. 190° — 195° 109 „ 
IV. 195° — 200° 209 „ 
V. 200° — 205° 213 „ 
VI. 205° — 210° . . . . . 151 „ 
VII. 2io°— 215° 107 „ 
VIII. over 215° .... . 79 „ 
IX. Loss and Hg O . . . . 40 „ 
II. Detection of Camphor. 
Fractions IV, V, and VI were repeatedly submitted to fractional 
distillation, until white crystals separated out in the receiver, which, 
after drying on tiles, showed the melting point of camphor 176^. For 
further identification the oxime was produced according to Auwers' 
process. It crystallised from alcohol in beautiful rhombic crystals, and 
had the melting point 117^ — 118°. The alcoholic solution of the 
oxime turned the polarised light to the left, whilst camphor turns it 
to the right. From this it follows that the camphor isolated by me 
from "Shu-yu", is identic with the lawaceae camphor of Japan. 
III. Detection of Eugenol. 
By extracting the portions of the oil boiling above 215° (frac- 
tion VIII) with 5 per cent, potash liquor, a tar-like product separated 
out, which had the odour of eugenol, but also possessed an additional 
empyreumatic odour. In order to demonstrate the presence of eugenol, 
the benzoyl compound was prepared bySchotten-Baumann's method; 
this melted, after purification, at 69°, the melting point of benzoyl eugenol. 
IV. Detection of safrol. 
The oil freed from eugenol was repeatedly shaken with water, 
dried, and then submitted to repeated distillation. The distillate of 
225^ — 235^ was shaken in the *'ice-cream" apparatus, when a pasty 
mass was obtained. It was collected on a filter, pressed on a tile, 
and again submitted to distillation. The fraction passing over between 
