78 
Indian Forest Records. 
[Vol. III. 
very soft porous woods when placed in moist situations that a coating 
of tar or paint will be necessary. The untreated woods have fared 
badly with the exception of Nos. 6, 16, 20 and 24. Three have been 
completely destroyed necessitating their removal, while five others are 
under progress of being destroyed. 
Summary. 
The records of sleeper wood treated with Atlas ” and laid down in 
India are so meagre that no conclusions can be anived at as to its value 
in preserving the timber; it appears, however, to be used with success as 
a weed-killer and as a disinfectant. Used in 20 per cent, solution it is 
somewhat expensive ; on the other hand, it sinks deep into the timber. 
Its power to withstand being washed out of the impregnated 
timber cannot be great if, as pointed out by the Agents, it is necessary 
to supplement the treatment by applying coal-tar to the timber 
after impregnation with Atlas; in other words, it must be classed as a 
“ Mixed impregnation 33 process; it has therefore been grouped under 
this head in Chapter IV, in which proposals for carrying out future 
experiments are made. 
(7) SOLIGNUM. 
SOLIGNUM. 
A solution known on the market as “ Solignum is a patent wood 
preservative, the exact constitution of which is not known but which 
probably contains a fair percentage of the heavy oils of Creosote. It is 
coloured with certain pigments and can be procured in various shades of 
brown, green, and red. It is used for preserving wood, as a disinfectant, 
and as a water-proof for stone and brick-work. 
* The manufacturers of “ Solignum” are Messrs. Major & Co., Ltd., Hull, England, 
and their Indian Agents, Messrs. Cooper & Co., 333, Abdul Rehman Street, Bombay, 
and 275, Bowbazar Street, Calcutta. It is sold in three shades of brown and three of 
green and also in purple-red. The price varies from R15 to R18 per 5 gallon 
drum according to colour, but if ordered in large quantities the price will be con¬ 
siderably reduced. 
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