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Average speed of the moderately heavy traffic is 55-50 
m.epeh. In summer 80-100 cars will be met in driving this stretch 
of 25 miles, and in winter the nymber varies between 40 and 80, 
Counts made on a number of separated days show that from early 
morning until late evening about two cars each minute pass over 
a given section of this highway. 
Records of the accompanying tables were for the most 
part made on Sunday mornings between seven and nine, though 
occasionally in the afternoon or on other days. There was at 
feast & five day interval, and in most cases a seven day wait, 
between the recordings.. Two persons rode in the car at a rate 
of 20-25 m.p.h. At higher speed many of the small birds are 
overlooked. Whenever a dead animal or bird was not readily 
identifiable the car was slowed or stopped. Even so 2é animals 
and 66 birds remain unknown for the three years of observation, 
due mainly to the mangled and decomposed state in which they 
were found. 
In those three years the observers found 1006 animals 
dead on the highway, in a total of 2100 miles, or an average of 
one animal or bird killed by an automobile every two miles. The 
greatest group was as might not be expected, 448 English sparrows, 
followed by 118 gophers and 84 chickens. In all, 32 kinds of 
animals or birds met their death on this highway, 10 of them being 
found only once. 
