30 BULLETIN 257, U.S. DEPARTMENT OF AGRICULTURE. 
The surface was swept by means of a rotary broom drawn by the - 
automobile distributor, which applied the bituminous material. The 
application was immediately covered with 3-inch washed gravel, and 
the road opened to traffic. The bituminous material is charged at the 
rate of 6.6 cents per gallon, and sweeping and applying at 2.5 cents 
per gallon. The cost data for the treatment are given in Table 24. 
When inspected the surface was smooth and hard, with but few 
irregularities. 
Section No. 2 (REFINED Coat TAR—MODIFIED GLADWELL METHOD). 
This section, although presenting a well-bound surface, is irregular 
and shows considerable wear, so that a surface treatment will be neces- 
sary during the coming season. 
Section No. 3 (Ftuxep NativE ASPHALT—PENETRATION METHOD). 
This section continues to present a smooth, well-crowned surface, 
but during the past year the seal coat has worn so that at the present 
time the surface has a mosaic appearance in some areas. ‘There are 
a few other areas, especially in the north half of the section, where 
the seal coat is still intact, and no general treatment will be required 
during the coming season. 7 
Section No. 4 (GitsonirE O1r ASPHALT—PENETRATION METHOD). 
This section, although well bound together, has an irregular sur- 
face, especially toward the gutter, so that it 1s rather rough under 
automobile traffic. In the depressions the stones are generally 
exposed, and probably. considerable patching will be necessary in the 
spring. 
Section No. 5 (Om ASPHALT—PENETRATION METHOD). 
The appearance of this section has not changed appreciably since 
the last inspection, described in U. S. Department of Agriculture 
Bulletin No.105. The surface is uneven, and in a few depressions the 
stone is somewhat loose. No raveling has occurred, however, and 
only minor repairs are now required. 
Secrion No. 6 (Om AsPHALT—PENETRATION METHOD). 
In general, this section has the same appearance as section No. 5. 
At the north end and on the west side of the trolley tracks the grade 
is 2 to 3 inches lower than that of the adjoining asphaltic concrete 
experiment, and it will be necessary in the spring to bring the sur- 
face to a corresponding grade. 
Section No.7 (A anv B; Om AspHALT—PENETRATION METHOD). 
The appearance of this section is not uniform. <A has quite a 
mosaic effect, the northern portion of B has several small breaks 
which will need patching in the near future, and the southern portion 
has developed a few slight irregularities. 
