40 BULLETIN 105, IT. S. DEPARTMENT OF AGRICULTURE. 
Experiment No. 9. — Oil asphalt — Penetration method. 
In June this section was in good condition with, the exception of 
one hole 1 \ feet by 1 J feet in size in the center of the road at station 
18 + 50. This hole was repaired in the same manner as the holes in 
section No. 5. 
This section was in good condition in December, excepting for some 
bleeding and a slight wariness on the last 75 feet. This was, how- 
ever, not sufficient to be noticeable to traffic. 
Table 36. — Cost data of repairs at Jamaica, N. Y\, 1913. 
Section. 
Patches. 
Carpet coat. 
Cost per 
Material. 
Labor. 
Total. 
Material. 
Labor. 
Total. 
yard. 
1. . 
$17. 72 
82.55 
$4.50 
69.45 
S22. 22 
152. 00 
$28. 39 
$28. 73 
$57.17 
$0 139 
2 
.183 
3 
.000 
4 
.000 
5 
2.16 
4.93 
7.09 
.0086 
6 
.000 
1.26 
3.0o 
4.32 
.0103 
8 
.000 
9 
.16 
.51 
.67 
.0016 
... | . 
SUPPLEMENTARY REPORT OF EXPERIMENTS MADE AT NEW YORK, 
N. Y., AND RIDGEWOOD, N. J., 1910. 
OIL- CEMENT CONCRETE. 
The original report of these experiments was published in Circular 
No. 94, and the reports of annual inspections appeared in Circulars 
Nos. 98 and 99. The following report covers inspections made 
December 17 and 18, respectively. 
Experiments at New York, N. Y. 
The general condition of the surface of the road shows gradual 
deterioration. The edges of the various cracks previously noted 
have widened and a few minor ones have formed. A new cut has 
been made in the center of the street from station 3 + 74 to station 
3 + 82, and another from station 3 + 92 to station 4 + 35. The greatest 
wear has taken place between station and station + 15, where a 
series of potholes has formed. Otherwise the wear has been uniform. 
Experiments at Ridgewood, N. J. 
The floor of the bridge over Saddle River has been covered with a 
bituminous surfacing and has therefore not been subjected to wear 
during the past year. The floor of the bridge over Hohokus River 
was in good condition and no appreciable wear has taken place 
since the last inspection. 
