28 
JOUKNAL OF MAMMALOGY 
along the beach near the mouth of the river shortly after dark and shine 
the light on the water to detect fishes. Then one of my natives would 
throw a circular casting net and sometimes catch a bucket full of mul- 
let-like fish at one throw. 
Later on, however, I hunted nearly every night and the first time that 
I went out with the lamp and the gun I shot five mouse-deer within a 
few minutes, and within five hundred yards of camp. These little 
animals, which are chiefly nocturnal, are so protectively colored that 
during the day time they are extremely difficult to find, and, when dis- 
turbed, disappear from sight very quickly in the heavy forest which 
they inhabit. The natives usually hunt them with dogs. I have seen 
one of these animals, pursued by dogs, jump into a large river and 
immediately disappear beneath the surface, not coming up until it 
had gone about twenty yards. Then it continued, swimming on the 
surface until the other side of the river had been gained. On the beach 
at Karang Tigau where I hunted these little deer, they were usually 
to be found about eight or nine oclock in the evening lying down just 
inside the edge of the forest, and unless the wind was unfavorable or 
one made some unusual noise they would pay no attention to the light. 
I have often approached within from six to ten feet and stood watching 
them ruminating. Earlier in the evening, or just after dark, they would 
be found walking about in the forest and if there were any wild fig 
trees about with ripe fruit they would be almost sure to come to feed 
on the fruit which had fallen. 
In going up the Berau River of northeastern Borneo, I found most 
of the country about the delta very low and much of it swamp, over- 
grown with nipa palms {Ni'pa fruiticans). With me on my large and 
clumsy sea-going prahu, were four Malays whose duty it was to row, 
paddle, and pole the boat. Tandjong Redeb is the principal and 
only real village on the river and is located about thirty-five miles from 
the sea. After going up-stream above Tandjong Redeb for one day’s 
journey we passed a few clearings along the banks of the river and then 
for fifteen days we paddled and poled against the current of this great, 
beautiful, tropical stream walled in on either side by the finest of tropi- 
cal forests which continued unbroken, for there was not a single native 
clearing, not even a hut along the banks. Behind the large prahu, we 
were towing a small and narrow dug-out canoe. Nearly every night 
on our journey up the river I took the gun and reflector lamp and hunted 
along the banks of the river, paddling for hours up the stream and then 
drifting down with the current, the whole time playing the rays of the 
