242 AUDUBON THE NATURALIST, 
cially if intending to fight his pursuer, and it 
behooves the hunter to watch these movements 
closely, as the horse will often shy, and without 
due care the rider may be thrown, which when 
in a herd of buffalo is almost certain death. An 
arrow will kill a buffalo instantly if it takes effect 
in the heart, but if it does not reach the right 
spot, a dozen arrows will not even arrest one in 
his course, and of the wounded, many run out 
of sight and are lost to the hunter. 
At times the wounded bison turns so quickly 
and makes such a sudden rush upon the hunter, 
that if the steed is not a good one and the rider 
perfectly cool, they are overtaken, the horse 
gored and knocked down, and the hunter thrown 
off and either gored or trampled to death. But 
if the horse is a fleet one, and the hunter expert, 
the bison is easily outrun and they escape.. At 
best it may be said that this mode of buffalo 
hunting is dangerous sport, and one requires 
both skill and nerve to come off successfully. 
The Gros Ventres, Blackfeet and Assinaboines 
often take the buffalo in large pens, usually 
called parks, constructed in the following manner. 
Two converging fences built of sticks, logs and 
brusiwood are made, leading to the mouth of a 
pen somewhat in the shape of a funnel. The 
pen itself is either square or round, according to 
the nature of the ground where it is to be placed, 
