THE 
JOURNAL 
OF THE 
Natural History Society of Siam 
March 1915. Vion EF, Nae 3: 
NOTES ON THE FAUNA AND FLORA 
OF RATBURI AND PETCHABURI DISTRICTS. 
(Continued ) 
2g gg 
By K. G. GAIRDNER. 
Mountains ENTIRELY Cuap IN EVERGREEN Forest. 
Oates in his preface to “The Birds of British Burmah” speaks 
of the interior of Tennasserim bordering on Siam as being “ almost 
impracticable to a European.” The Petchaburi hinterland was, until 
four years ago, practically unknown both to Siamese and Europeans, 
being deservedly unpopular both on account of its inaccessibility and 
the deadly nature of the malaria only too easily contracted in the dark 
chasm-like valleys. 
The boundary, or watershed is, however, probably more easily 
approached from the Tennasserim side than from the Siamese, owing to 
the fact of the Tennasserim river flowing due South parallel to the 
boundary for some 140 miles, and distant from it only some 7 to 15 
miles. This river is, I believe, navigable by “ dug outs” for the greater 
part of its length. 
Expeditions in wild mountain country, practically uninhabited, 
are entirely dependent on coolie labour for the transport of goods and 
necessaries, and since a healthy Lao coolie consumes 35 to 40 Ibs of 
rice per month (or the equivalent of one man’s heavy load in such 
