COLLECTING EXPEDITION TO BATANG PADANG. E25 
and poled up the river to Kuala Woh, which place we reached 
after a walk of two and-a-half hours, the track crossing the 
Batang Padang River twice. The whole way, wherever there 
was an opening in the jungle, we met with swarms of yellow 
butterflies. There must have been millions of them spread 
over the country. In places they were settled so thickly that 
the ground could not be seen. Some of these patches were 
two and three feet in diameter, and after driving away the but- 
terflies the ground was quite yellow from pieces of their wings 
and dead ones. I have never seen such a sight before, al- 
most any sweep of a butterfly net would catch a dozen or 
more. Inthe afternoon it came on to blow, just before a 
shower of rain, and all the butterflies at once took up posi- 
tions on the undersides of the leaves of trees and plants and 
on the lee sides of the stems and roots. They were all of one 
species of Terias (7erzas hecabe), and the Malays said that 
they had appeared about a week before we saw them. The 
whole of the next day’s march they were quite as numerous, 
though we rose to an altitude of 1,130 feet above sea level, 
and they were also fairly common as high as the camp on 
Gunong Batu Puteh, which we reached on the day after. 
Almost the whole of the land passed through, lying between 
Tapa and Kuala Woh, is of most excellent quality, a great deal 
of it being covered with bamboo forest. The bamboo seemed 
to belong to one species only, and is known by the Malay 
name of duluh telor. 
The track passes through several Sakai clearings, one of 
which was in a most creditable state of cultivation. In an- 
other there was a typical Sakai house on very tall posts and 
with a considerable sized raised platform on a level with the 
Lantz floor. There were also two Sakai graves near the 
track. They were raised like the Malay ones, and well taken 
care of. Onthem were the remains of fruit, flowers, Indian 
corn, coco-nut shells, bottle-gourds, roots, &c., which had been 
placed there probably as offerings to the dead. 
One of the boats containing the baggage arrived at Kuala 
Woh at 5 P. M., having been ‘eight hours on the way, and the 
other did not arrive till about 6 A. M. on the morning of the 
26th, and at g A. M. on that day we started up the valley of the 
