32 BULLETIN 105, U. S. DEPARTMENT OF AGRICULTURE. 
up rather unevenly, and this condition led to the formation of a 
number of worn depressions toward the north end of the section, 
where patching became advisable. The shallower places were cared 
for by a thin paint coat of oil asphalt with screenings, but a few of 
the deeper ones were cut out clean and filled with new stone, and a 
patch was made by the penetration method. 
The total cost of patching during the past year was $4.05. 
Section No. 5. — Oil asphalt — Penetration method. 
During the past summer it became necessary to repair four small 
worn depressions in which the stones were working loose. Three 
were on the east side and one was on the west side of the road, and 
all were close to the gutter. At the time of the inspection the sur- 
face presented a somewhat uneven and worn appearance; coarse 
surface stones were in evidence throughout, and the binder apparently 
did not retain much life. There were, however, no signs of raveling 
and no necessity for any repairs. 
The total cost of patching during the past year was $2.31. 
Section No. 6.— Oil asphalt — Penetration method. 
This section presents about the same general appearance as No. 5. 
The depressions mentioned in the previous inspection report raveled 
badly in a few months and were finally repaired with new stone and 
oil asphalt applied by the penetration method. Four patches were 
made along the west side close to the gutter and one at the north end 
of the east side. 
The total cost of these repairs was $3.47. 
Section No. 7, A and B.— Oil asphalt — Penetration method. 
The bitumen used in this section was without doubt too hard and 
had too high a melting point for this class of construction. In A, 
where two coats were applied, the binder lacks life, and it became 
necessary to patch another loose depression during the past season. 
B offers an excellent demonstration of what prompt and efficient 
maintenance can accomplish when the failure of bituminous con- 
struction is imminent. The simple cold-surface treatment described 
in Circular No. 99 undoubtedly prevented the loss of this section, and 
it now presents a good surface. It has had no further attention and, 
with the exception of one or two very small worn places which were 
evidently not properly cared for when repairs were made, it will 
probably not require any expenditure upon it during the coming 
season. 
