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Description of large still and Condenser : — 
(1) Boiler. On many Estates where rubber and 
other produce is grown the question of steam has already 
been settled and there would be no necessity for another 
boiler. For experimental purposes however a small boiler 
had to be erected. This consisted of a simple cylindrical 
boiler which was erected horizontally on a simple brick and 
cement foundation and was fired externally by wood. The 
boiler is fitted with a water level, and safety valve, together 
with an opening for filling at the top. 
(2) Still. A pipe from the boiler conducted the 
steam below a perforated plate in a plain cylindrical still, 
the leaves, wood, etc,, to be distilled, being placed on the top 
of the perforated plate, the still being charged from the 
top. The topj of the still was fixed by means of nuts and 
screws and rendered air tight by asbestos rings. 
(3) The Condenser. The condenser was a kind of 
quadruple Liebig condenser, consisting of a vertical 
cylinder containing four copper tubes connected above and 
below with an air space. The tubes were surrounded with 
the cooling water which was led in by means of a pipe over 
the bottom and flowed away near the top. The bottom and 
top of the condenser were fixed by means of nuts and screws 
and rendered air tight by asbestos and were detachable for 
cleansing purposes. A short bent copper tube from the 
bottom air space carried off the condensed steam, camphor, 
and oil, which was collected in glass vessels. 
The boiler, still, and the outer shell of the condenser 
were constructed of iron, the tubes of the condenser and 
upper and lower plates attached to these tubes were of 
copper. The following are the dimensions of the above 
apparatus and the capacity of the still in terms of fresh 
camphor leaves, primings, and wood (the latter cut up into 
small pieces). 
Boiler. Length 2 feet 9 inches. 
Diameter 1 foot 9 inches. 
Still. Length 2 feet 6 inches. 
Diameter 1 foot 9 inches. 
Capacity in terms of camphor leaves 30 lbs. 
Capacity in terms of camphor wood 90 lbs. 
Capacity in terms of primings 50 lbs. 
Condenser. Length 2 feet. 
Diameter 9 inches. 
Length of copper condensing tubes 1 ft. 9 ins. 
Diameter of copper condensing tubes 1 inch. 
