26 BULLETIN 105, U. S. DEPAETMEXT OF ' AGRICULTURE. 
Table 30. — Analysis of aspJialiic -petroleums used in experiments at Miami, Fla. 
Light. 
Heavy. 
Character. 
j Experi- 
Experi- 
i merits 
ments 
1, 2, 4. 
3, 5, 6. 
0.960 
0.992 
42 
165 
6, 
145 
i 152. 4 
2 9.0 
27.53 
16.33 
3 2'19" 
3 2 40" 
10.40 
10. S3 
5.01 
5.S2 
99.94 
99.94 
.05 
.04 
.00 
.02 
Specific gravity 25°, 25° C 
Flash point ° C 
Binning point c C 
Viscosity, Engler, specific 
Per cent of loss at 163 c C 
Float, tost on residue (50° C.) 
Per cent of total bitumen insoluble in 86° B. naphtha 
Per cent of fixed carbon , 
Per cent soluble in CSa (total bitumen) 
Per cent of organic matter insoluble 
Per cent of inorganic matter insoluble 
Total 100. 00 
i At 25° C, 50 c. c. 
2 At 100 c C, 100 c. c. 
3 Soft, sticky, with slight flow. 
Experiment No. 1. — Semlpenetration method — Cold, liget oil. 
Location: From station 0+00 to station 0- 
Lensth: 96 feet. 
96. 
Method. — The old surface was scarified, regraded, and left loose to 
a depth of about 2 inches. Rain during the night previous to oiling 
caused the surface to rebond, and it was again broken to a depth of 2 
inches and smoothed with rakes. The light oil was applied at the 
rate of 0.9 gallon per square yard and allowed to soak in for two 
hours before sanding, after which the surface was rolled. Owing to 
the quantity of fine material in the scarified surface, very little pene- 
tration was accomplished, but the oil was absorbed to a considerable 
extent. On rolling, the surface cracked and waved badly. Several 
rains with a light rolling after each improved its condition to a great 
extent, but the promise of ultimate success was not great. 
Experiment No. 2. — Surface treatment— Cold, light oil. 
Location: From station 0+96 to station 5+49. 
Length: 453 feet. 
Method. — The old surface was scarified, regraded, and water-bound. 
It was then swept clean and the oil was applied at the rate of 0.5 
gallon per square yard by means of pouring pots. After vigorously 
brooming the oil, the surface was sanded and rolled. 
From station + 96 to station 2 + 85 the surface was very damp 
from rain the previous night. The oil was allowed to stand from two 
hours at station + 96 to six hours at station 2 + 85. It was sanded 
late in the afternoon and rolled the following morning. From station 
2 + 85 to station 3 + 90 the sand was spread immediately after the oil 
was applied. From station 3 + 90 to station 5 + 49 the oil stood from 
three to six hours before sanding. The sanding was barely com- 
