Part III.] Puran Singh : 'Note on Manufr. of Ngai Camphor. 281 
The results in this table confirm the impression gained from a com- 
parative examination of the odours of the bruised leaves of C. eam'phora 
and of B. halsamifera, made by smelling both alternately, that the leaves 
of the former contained more camphoraceous (volatile) matter than those 
of the latter. It is thus evident that B. halsamifera can never be made 
a successful rival cf o', camphora unless perhaps it were by means of arti- 
ficial cultivation. 
Attention may incidentally be drawn here to the important suggestion 
first made by Mr. Hooper {loc. cit.) that the leaves of C. camphora could 
profitably be utilised for the manufacture of common camphor in India 
and elsewhere. 
Sample No. 7. — Blumea lacera D.C. (Burmese, Kadu). — There are other 
species of Blumea than B. halsamifera, the leaves of which when bruised 
emit a camphoraceous odour. My attention was drawn to one of these 
at Pynmana. The inside of the wood of this plant was found to be white 
and soft. Both the leaves and the stem when crushed exuded much 
liquid matter, and possessed a strong camphor-like odour. It was identi- 
fied for me afterwards as Blumea lacera by Mr. W. W. Smith, 
Curator, Sibpur Herbarium, Calcutta. The following determinations were 
made at Pynmana in a mixture of the leaves and very fine stems of this 
species : — 
Table No. VI. 
Sample. 
Moisture. 
Volatile 
oil. 
Volatile oil 
calculated on 
dry material. 
Blumea lacera (Pynmana) 
67-20 
0-67 
2-04 
The oil obtained from Blumea lacera has a specific gravity of 0-9144 
at 26-7° (Dymock), which is nearly the same as that of the oil of Borneo 
camphor, sp. gr. at 15°C. 0-882 — 0-909 (Macewan). This would suggest 
that both oils contain a mixture of terpenes and their oxygenated deriva- 
tives nearly in the same proportions. Considering that the percentage 
of the essential oil from B. lacera calculated on the dry material 
is as much as, rather larger than, in B, halsamifera, it is obvious 
that the former variety of Blumea, too, merits our attention, as an abun- 
dant supply of it can be obtained in Burma. 
