$8 
Indian Forest Records. 
rVoL. III. 
Past Reecords of Timber treated with Microsol. 
The value of this antiseptic, under Indian conditions, is not known. 
The solution contains a high percentage of sulphate of copper, a salt that 
was formerly much employed in Europe for the antiseptic treatment of 
timber. As before pointed out, this salt is liable to be washed out of the 
timber by heavy rains, and for this reason it has been largely supplanted 
by other antiseptics. Microsol has, however, been given a fair trial in 
Europe and the results recorded are favourable. This may possibly be 
due to the presence of gypsum which being insoluble in water, forms a 
coat over the cell-walls and retards the action of the rain on the soluble 
copper sulphate. 
M. Henry, in his treatise on the antiseptic treatment of timber above 
referred to, explains at length his experiments carried out with Microsol, 
and his photographic plates illustrating treated and untreated timber, 
which had been utilised as mining-props and also used as posts in the 
open, during a period of three years, clearly show the value of this anti¬ 
septic. 
In 1901, the Research Station of Mariabrunn carried out experiments 
with Microsol known on the market as “ H. de 1903/* and procured from 
Eduard Lutz & Co., of Vienna. The experiments show that a 1*5 per 
cent, solution was quite sufficient to protect the treated coniferous timbers 
from the attack of Merulius and other fungi. 
No experiments have been carried out by the Forest Department in 
India with this solution, but it is proposed to do so shortly. 
(IO) bellit einfachflour and doppel flour. 
Bellit. 
“ B61lit *** is a patent antiseptic solution consisting of Sodium-fluoride 
80 per cent, Dinitro-phenol 12*5 per cent, and Aniline 65 per cent. It 
s soluble in water, a 1 in 44 solution being used, or 2*25 kilos, to 100 
litres of water. The solution should be heated to nearly boiling point, 
and the timber allowed to remain in the fluid as it cools down for a 
period varying from 24 to 48 hours, according to the density and di¬ 
mensions of the timber to be treated. The difference between Einfach and 
* Bellit is obtained from the Oesterrichischer Verein fiir Chemische und Metallur- 
giscke Produ.cten, Aussig. A/E Austria, also from the Chemical Factory, Griesheim, 
Frankfurt, A/M, Germany. 
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