136 JOUENAL, NATURAL HLST. SOCIETY OF SIAM. Vol. I. 



sluggish than the common squirrel, and Avhich has the habit of lying 

 spread flat on big horizontal branches for some time when observed, 

 with perhaps the end of the tail appearing over the side onl3\ 



From here I followed down the Pran valley to the next Karang 

 hamlet, and ascending a range of 600 metres to the South East, crossed 

 over into the Huey Sat Yai, a stream considerably bigger than the 

 parent Pran river. 



On the march we found old evidences of rhinoceros, and the cock 

 collected all the dried excrement he could find, the Chinese having great 

 faith in anything connected with ^he rhinoceros as medicine. 



The game track up the Sat Yai is excellent going in the dry 

 season, and the track must have been used without change for 

 generations by pachyderms, judging by the gnarled tree roots and rocks 

 polished and worn smooth occurring in the path. On the 2iid day's 

 journey up this stream, at about nine o'clock, we found ourselves on the 

 brink of a dry gully, which extended in an almost straight line far up 

 the hill side, and showed up clearly against the deep green jungle on 

 either side. A pair of Malay bears were observed feeding and leisurely 

 turning over stones up the gully some 200 yards away. These I stallced 

 and missed, but I came back at 6 p.m. when another bear appeared in 

 the same spot, and this I also missed, misjudging the di^itance in the 

 failing light. The Malay bear was frequently observed in that valley 

 and took little heed of the coolies going to and fro for rice and supplies. 



Two days later, continuing the march upstream, the fi-esh tracks 

 of rhinoceros were found. I have not yet seen one, but from the fact of 

 native hunters recognizing the "raadt" or one-horned species and the 

 "kra-soo" with two horns, it is almost certain that both R. sondaicus 

 and R. sumatrensis exist in that area, I have found their tracks up to 

 and above 4000 feet. In 1911, a female with young attacked a Survey 

 party in the Yang Choom valley, and savagely bit a coolie in the arm. 



It was found necessary to camp on a ridge of some 1200 metres 

 on the boundary, water being brought up daily by the coolies from the 

 valley 700 metres below. The trees at that elevation are entirely clothed 

 with mosses, tree ferns and orchids, and many of the outer trees are 

 stunted, there being no high ranges on the Tenasserim side at that 

 point to lessen the force of the S. W. monsoon, 

 -f The Grey-headedlm-periaWlgeon (Carjmphaga griseiea2yilla) was 



obtained here. The call is a peculiarly deep "er-woob-woom" and I have 



