54 
Indian Forest Records. 
[Vol. 111. 
initial outlay for erecting the plant is heavy, while treatment at 5 annas 
per cubic foot is also higher, than other similar processes. This is no 
doubt due to the cost of the sugar solution, the comparatively long 
period of immersion in the liquid at boiling point, and especially to the 
cost of the artificial method of drying the timber. Taking, as an 
example, the cost of converting and landing a B. G. Pine sleeper at 
Jagadhari station on the North-Western Railway from the Tons forests 
at Rl-4-0, the price of the timber as 6 annas per cubic foot or Rl-3-9 
per B. G. sleeper, the cost of processing at Rl-0-6, the total cost of a 
treated sleeper comes to R3-8-3, as against Rl-0-0 for an untreated 
Deodar sleeper, whose life we know to be 12- years. 
As regards the value of this process, the Australian experiments car¬ 
ried out over a period of 4 years go far to prove that it in a great mea¬ 
sure fulfils the conditions claimed for it by the inventor, while the experi¬ 
ments made on railways in Burma with Indian species are also favourable. 
The laboratory experiments have not as yet had time to prove anything 
further, than that it renders immune the very soft timber of India to the 
attack of white-ants for at least one year. 
Lastly, a point much in favour of this process is that green timber 
can be treated, obviating the necessity of resorting to the tedious pro¬ 
cess of naturally seasoning the logs. 
(4) AVENARIUS CARBOLINEUM. 
Avenarius Carbolineum. 
The group of oils obtained by the distillation of coal-tar and known 
on the market as Carbolineum oils, consist of those oils heavier than 
water which together with tar acids go to make up Creosote. The two 
grades best known on the market are Avenarius Carbolineum * an antiseptic 
solution which was first brought on the market some 30 years ago by Mr. 
Avenarius and Carbolinetm marque de Lion. The former, according to 
an analysis, made by Dr. Filsinger of Dresden, and quoted by Mon¬ 
sieur Henry in his “ Preservation des Bois ” contains oils distilling at 
* Agents for Bengal and Eastern Bengal and Assam, C. & A. Danby, 14, Radha 
Bazar Lane, Calcutta ; and Agent for all India, G. Wense, Agra, United Provinces ; 
costRllper5 gallon drum, or, RI-12 per gallon; wholesale price, Calcutta, 
Bombay and Karachi, Rl-10per gallon for orders of over 100 casks. One gallon 
weighs 11 lbs. 4 oz. 
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