106 
Indian Forest Records. 
[VOL. lit, 
(b) The Open Tank Method. 
(J) Corrosive sublimate or Bichloride of Mercury —The process is 
not to be advocated for India, as the highly poisonous nature of the salt 
makes it objectionable. 
(2) Powell’s process. — The experiments on a large scale by which 
5,000 sleepers are to be treated are already well under way, as are also 
the laboratory experiments. The subject therefore requires no further 
rcin^T k s 
*(3) Avenarius Carbolineum.-^ The laboratory experiments are well in 
hand, and a scheme to treat 2,500 sleepers with Avenarius Carholineum 
oil has been submitted for sanction, and it is hoped that the work of 
carrying out this experiment will shortly be taken in hand.* 
(4) Joel elite. —As funds are available, experiments on a large scale 
are proposed with this oil, to be carried out on the same lines as those 
with Carbolineum ; in the meantime the laboratory experiments will be 
continued. . 
(5) Atlas solution.— This antiseptic is dealt with under “Mixed im¬ 
pregnation.^ 
(6) Solignum.— It is not proposed at present to carry out experiments 
with Solignum on as large a scale as with Carbolineum and Jodelite, as 
the solution is more of the nature of a paint and is therefore moie 
suitable for indoor work. As regards its cost, it compares favourably 
with other similar solutions, but this condition of affairs would most pro¬ 
bably no more hold good were the timber to be immersed in the solution, 
instead of being applied with the brush. 
The laboratory experiments will, however, be continued, and if after 
a reasonable time the timber is found to be preserved from decay by 
merely painting on the fluid, the advisability of treating large numbers 
of sleepers as a further experiment may be considered. 
(7) Green Oil and Bellit.— To be experimented with on a laboratory 
scale; they are also dealt with under “ Mixed impregnation.^ 
{&) Microsol and Cresol-Calcium.—^o be experimented with on a 
laboratory scale only at present. 
(c) “xMixed Impregnation. 
The object of the treatment of timber by mixed impregnation is to 
reduce the cost of the process. This is effected by first treating the 
♦Note. —Since writing the above paragraph the experiment has been successfully 
launched. 
( U9 ) 
