Part II.] Pearson: Antiseptic Treatment of Timber. 
79 
Method of Treatment. 
In the prospectus issued by the Company they state that the solution 
should be applied with a brush, one or two coats being necessary, either 
cold or when climatic conditions are unfavourable after being heated to 
160°-180° F. It is further stated that Solignum has a tendency to 
work downwards, so that it is advisable to place the prepared ends o f 
wood that are going into the ground upwards until dry. 
When the treated wood is to be varnished it should be allowed to dry 
thoroughly, this sometimes takes considerable time. A special solution 
is prepared by the Company, for use in doors, which has the power of 
drying quicker than the ordinary solution. 
Absorption of the Solution by Indian Timbers. 
As the timber to be treated is not immersed in the solution, but 
is painted on with a brush, the amount of absorption is less than 
when the timber is treated by the Open Tank Method. 
A record of experiments is published by the Company, which were 
carried out by the Punjab Public Works Department, by which 25 
Kail wood (Pinus excelsa) battens, 9 / -0 // x 6£" x 3" (353 square 
feet) were treated with hot Solignum and with the— 
First coat 96 oz. = 0‘60 gallons were used, and with the 
Second „ 56 oz. = 0*35 „ „ ,, 
Total= 095 gallons. 
One gallon will therefore cover 372 square feet when two coats of the 
solution are given to this conifer timber. It was also found that one 
gallon covered 586 cubic feet if only one coating were given to the wood. 
Similar experiments to those carried out with Avenarius Carbolineum , 
Jodelite and Atlas solutions were made with Solignum, at the Forest 
Research Institute. In this case one coating of the hot solution was 
applied to the timber with a brush ; the amount of the fluid taken up by 
the various species is given below. As by applying the solution with a 
( 152 ) 
