134 JOURNAL, NATURAL HIST, SOCIETY OF SIAM Vol I. 
On the 15th March 1912 I left my headquarters camp with 
20 coolies and, crossing a low ridge, slept that night at a big rock poo} 
in the Huey Ma Rew, a favourite haunt of langurs, and attracted by 
the excrement of these, or some other cause, numberless flies kept up a 
humming as of swarms of bees till nightfall and started again at 
dawn. In the previous year a herd of sladang haunted this pool for 
some months : and on one occasion while we were improving the game 
track to make it serviceable for mail transport, a sladang waited at the 
side of the path watching me till I approached within 10 yards. The 
first intimation i had of its presenc? was when, whirling round, it 
dashed up the hillside. At other times I have found them lying down 
during the heat of the day on the more open knolls ofa hillside, and 
on such occasions they go crashing down to the valleys before one gets 
near them; and the fact of this beast waiting is probably attributable 
to the haphazard and ‘‘doing nothing in particular” manner of my 
approach. 
Following the stream to its source, the path ascends steeply and 
crosses the rather flat watershed between the Ma Rew and Maa La 
Liang valleys at an elevation of some 450 metres. I found the bed of 
a small dry stream crossing the path to be much encrusted with a 
deposit of lime several inches in thickness, and more especially of 
course where the water had trickled down small declivities. In the 
previous year I saw on this path a large family of the big muscular 
Stump-tailed Macacques—never found outside the evergreen jungle 
and usually at some elevation. In 1911 I obtained a young one 
dropped by his mother in her flight, and this I kept till it died of sun- 
stroke during the present year. 
Continuing along the well defined game track, the path descends 
at an easy slope to the Huey Maa La Liang. This stream has its 
source at the base of a mountain range surmounted by a grass covered 
peak some 1250 metres in height, and is the only mountain within a 
radius of ten miles with aname toit (Kao Pa Nern Toong). In the 
previous year the valley was inhabited by a Karang and his family, but 
in April the wife and daughter fel} ill with cholera, and the husband 
fled leaving them to die and their bodies to dry in the sun. In cases 
of cholera and small pox, Kariangs and Karangs immediately flee, 
forming new settlements elsewhere, but I believe as a rule bury their 
dead. In 1912, small pox broke out in my headquarters camp, and 
