98 
Indian Forest Records. 
[Vol. VI 
one from another, though they are in most cases entirely dependent 
one on the other; thus the mechanical strength of the timber does not 
affect the cost of treatment though, unless both fall within the required 
specification, such an undertaking is doomed to failure. That the treat¬ 
ment of timber is not always a simple matter, has not been sufficiently 
recognized in this country, and is without doubt one of the causes of 
failure in the past. In the following chapter it is proposed to deal with 
each factor separately, with due regard to their bearing one to another. 
(2) Species of timber suitable for Railway sleepers, after 
treatment. 
On pages 11 and 12 of Volume III, Part II, of the Indian Forest 
Records, is given a list of timbers, divided into three classes which, it is 
thought, might be utilized for sleepers after treatment. Further infor¬ 
mation as to possible supplies of timber has been collected since that 
list was prepared, while the results of recent experiments have made it 
possible to add several new species of timber to those previously men¬ 
tioned. The lists, as they now stand, are as follows :— 
Timbers which are most likely 
the necessary requirements. 
to 
fulfili 
ii. 
The next most likely species to fulfil the 
necessary requirements. 
Ill/ 
Possible sleeper woods . 
f 1. Dipterocarpus tuberculatus. 
2. „ alatus. 
3. ,, turbinatus. 
4. ,, pilosus. 
5. Shorea assamica. 
6. Terminalia tomentosa. 
7. „ myriocarpa. 
8. „ Manii. 
9. „ paniculata. 
10. Pinus longifolia. 
11. Abies Pindrow. 
/12. Picea Morinda. 
f 13. Altingia excelsa. 
14. Anthocephalus Cadamba. 
15. Vateria indica. 
16. Terminalia Catappa. 
17. „ biodata. 
18. Bischofia javanica. 
19. Lagerstrcemia microcarpa. 
20. „ Flos-Regince. 
21. „ par viflora. 
/22. „ tomentosa. 
f23. Pinus Khasya. 
24. Poeciloneuron indicum. 
25. Albizzia Lebbek. 
26. „ odoratissima. 
27. Hardwickia binata. 
28. Vitex altissima. 
29. Callophyllum Inophyllum. 
30. Dillenia indica. 
31. Artocarpus Ghaplasha. 
32. Manglietia insignis. 
b33. Cynometra polyandra. 
228 1 
