118 R. T. BAKER AND H. G. SMITH, 
suitable for perfumery purposes than for medicine. Unfor- 
tunately the yield of oil is somewhat small, and the minute 
leaves, peculiar to the species, is also a character detri- 
mental to profitable distillation. Another feature which 
may also militate against its industrial employment is the 
fact that commercially prepared terpineo]l can now be 
purchased at a comparatively cheap rate. | 
Summarising the results here recorded it may be stated: 
that the oil of Melaleuca ericifolia differs from the oil of 
“‘cajuput”’ in the following directions :— 
(a) by having a much lower specific gravity. 
(b) by the terpenes being strongly dextrorotatory. 
(c) by containing dextrorotatory terpineol in some 
quantity. 
(da) by containing considerably less cineol, and 
(e) by the chief oxygenated constituent being terpineol: 
and not cineol. 
Experimental. 
The material for this investigation was collected at. 
Kogarah, near Sydney, New South Wales, in February,,. 
1916, and was from the white flowering form of this species. 
The yield of oil from the fresh leaves and terminal branch-- 
lets was 41 ounces from 306 Ibs. of material, equal to 0°84 
per cent. The crude oil was of a very light-amber colour,. 
and had an odour with some resemblance to that of 
‘“‘cajuput,’”’ although more aromatic, a character due to the 
presence of the terpineol. This constituent being present. 
in some quantity causes the oil to be less mobile than are,. 
for instance, the majority of the cineol bearing oils of the 
Kucalypts. 
The following constants were obtained with the crude oil: 
Specific gravity at 15° C. =0°8938 
Optical rotation ay + 13°3° 
Refractive index at 20° =1°4705. 
