36 
Indian Forest Records. 
[Vol. VI 
Kanara, the Dipterocarp sleepers by Messrs. Leete, Marsden and Heffer- 
man, all Burma Foresters, and the Pines by the writer. The sleepers 
after treatment were handed over to the Railway Authorities, free of 
cost, as in the case of the Powellized sleepers. 
The number of treated sleepers actually handed over to the Railways 
amounted to 326 B.G. Pinus longifolia, 400 B.G. P. excelsa treated at 
Jagadhri on the North-Western Railway, 400 M.G. Dipterocarpus tuber- 
culatus, and 400 D. alaius treated at Pyinmana, on the Burma Railways, 
and 395 M.G. Terminalia tomentosa treated at Tavargatti, on the 
Madras and Southern Mahratta Railway, in all 1,921 sleepers. 
(it) Method of treatment. 
(a) Treatment o/ Pinus longifolia and P. excelsa broad gauge 
sleepers. 
The Pine sleepers were treated at Jagadhri by the writer in April 
1912, in a 11' 3"x3' 9"x2' 10" open tank, sunk in a pit nearly flush 
with the ground. Beneath, a brick flue was constructed, running the 
whole length of the tank and open at both ends. Over the tank, an 8 feet 
tripod was erected, to the head of which was fixed a system of pulleys, 
the lower pulley being fitted with a stout hook. Two pairs of parallel 
sleepers were placed on each side of the tank and at right angles to it, 
to receive the sleepers. The sleepers were made up into parcels of six, 
with strips of iron between each sleeper and the whole bound together 
with iron slings, fitted with hooks and eyes. On the first parcel being 
made up, the centre sling was passed over the pulley hook and the load 
hoisted into the tank. A second parcel was then made up and hoisted 
on to the top of the first load, effectually submerging it in the oil, the 
second load being submerged by adding additional sleepers. After 
immersion for the required period, the weights were removed and the 
two batches of treated sleepers slung, after the oil had been allowed to 
drip off, to the opposite side and eventually removed to the stacking 
yard. 
It was found that by allowing a 15 minutes immersion period, 5 
minutes for the oil to drip off the sleepers and 15 minutes for stacking 
and changing them, that 12 sleepers could be treated in 35 minutes. 
With a view of ascertaining the period of immersion required in order 
to make Pinus longifolia and P. excelsa broad gauge sleepers absorb 
3 lbs. of oil each, six sleepers of each species were weighed before and 
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