FAUNA AND FLORA, RATBURI PETCHABURI. 35 
odorata (“Ton takien”) of the same Natural Order. This lines the river 
banks up to a considerable elevation, usually springing from the bank 
at summer level, and is used by the Kariangs for making their 
dug- out canoes. 
Of the Dipterocarpae or “Ton yang” family, I only identi- 
bo 
fied one (D. alatus ), but I remember hearing the name Tuan, 
so probably D. tuberculatus also occurs. 
Large areas occur of the gregarious “Ton teng” and ‘Ton 
rang” (Shorea obtusa and siainensis ) and from these areas have been 
cut most of the sleepers for the Southern Railway. Growing on light 
rocky or stony soil, the ground beneath these trees is usually clear of 
undergrowth, except short tufts of grass and a peculiar tree fern with 
atrunk from 2-3 feet high. Notwithstanding annual jungle fires, 
these tree ferns burst into leaf, and a species of lily flowers, im- 
mediately after the first few rains at the end of April. 
Another noticeable tree is the Xylia dolabriformis which 
22 
produces the Ty WAq and which, in conimmon with some other 
Mimosas, has a sweetly-scented flower in March, and a big seed 
pod, which is frequently heard in January and February suddenly 
bursting open with a_pistol-like report. 
« ; 2 ' 
In the same Natural Order is another timber tree—the my vssA 
5) 
( Plerocarpus indicus ), which I have found at elevations of 390-400 
metres 
The Teak tree ( Te:tona grandis) does not occur, in a natural 
state, this side of Siam, south of 14° 20’ N. Lat., where I found it 
gregarious; but it is frequently planted in the area under review, 
noticeably at Potaram. 
At Khao Pah Lai, south-west of Petchaburi, | found a species 
of true Pine ( Pinus merkusii ) at an elevation of 400 metres, growing 
on bare exposed ridges. This species is recorded by Brandis from the 
Shan States of Burma and also from Sumatra. It is an unmistakable 
tree, being the only pine in which the leaves occur in clusters of two ; 
but the trees were stunted and poor—having a diameter of only one- 
third that given by Brandis. 
In these two classes of country ave found the great majority of 
the mammals occuring in this area. 
