Paiit II,] 
Indian Forest Records . 
81 
Cost of Treatment. 
From the figures quoted above of the experiments carried out in the 
Punjab by the Public Works Department, the cosfc of treating Pinus 
excelsa battens worked out as follows :— 
0*21 anna per square foot for two coats, corresponding to a 
cost of 5*12 annas for a B. G. sleeper. 
0*105 anna per square foot for one coat, corresponding to a 
cost of 2*56 annas for a B. G. sleeper. 
The cost of treating a B. G. sleeper of the species mentioned in the 
above table is based on the following data. One gallon of Solignum 
weighs 10 lbs. 11 oz. or 171 oz. The cosfc of a gallon of the solution 
comes to R3 per gallon, therefore the cost of one oz. = 0-28 anna. A 
B. G. sleeper has a superficial area of 24*4 square feet, and by taking the 
amount of absorption by the various species as given in the above table 
we get the following figures :— 
Species. 
1 
Cost of processing. 
Cost of solution 
required to cover 
a B. G. sleeper. 
Total cost of 
treating a B. G. 
sleeper. 
Boswellia serrata 
anna. 
0-25 
annas. 
25-9 
annas. 
26*15 
Finns longifolia 
0*25 
9'5 
9*75 
Pinus excelsa .... 
0-25 
9*5 
9*75 
Picea Morinda 
0-25 
2-4 
2*65 
Abies Pindrow .... 
025 
142 
14*45 
Pterocarpus macrocarpus 
0-25 
1*6 
1-85 
Bombax malabaricum 
0-25 
129 
13*15 
Bauhinia retusa 
0*25 
6'6 
675 
Dipterocarpus tuberculatus 
0*25 
3-2 
3*45 
Anogeissus latifolia . 
0*25 
5 1 
5-35 
Odina Wodier .... 
0-25 
6*4 
6*65 
Shorea robusta .... 
025 
6*4 
6£5 
Average 
025 
8-6 
1 
8*85 
( 154 ) 
G 
