Page:Popular Science Monthly Volume 81.djvu/180

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174
THE POPULAR SCIENCE MONTHLY
Flows (melting point N. Y. T. L. method) 151° F.
Penetration at 77° F., 5 sec, 100 grams, No. 2 needle 3 .0 mm.
 
Loss 20 grams 325° F., 7 hours, 214 dish 2 .9 per cent.
Character of residue Smooth
Penetration at 77° F., 5 sec, 100 grams, No. 2 needle 1 .2 mm.
 
Loss 20 grams 400° F., 7 hours, 2414 dish 7 .2 per cent.
Character of residue Smooth
Penetration at 77° F., 5 sec, 100 grams, No. 2 needle .4 mm.
 
Loss 50 grams at 325° F., 24 hours, 278X114 dish 3 .9 per cent.
Character of residue Smooth
Penetration at 77° F., 5 sec, 100 grams, No. 2 needle .5 mm.
 
Bitumen soluble in CS2 air temperature (70° F.) 94 .6 per cent.
Difference 1 .5 per cent.
Inorganic or mineral matter 3 .9 per cent.
100 per cent.
 
Bitumen soluble 88° naphtha, air temperature (70° F.) 67 3 per cent.
This is per cent, of total bitumen 71 .2 per cent.
Carbenes—per cent. bit. insol. CCl4 air temp. (70° F.) None
Bitumen yields on ignition: Residual coke 12 .9 per cent.
Sulphur 5 .5 per cent.
 

It appears from the above that the Bermudez asphalt is differentiated completely from that found in the Trinidad pitch lake, by the absence of

 

PSM V81 D180 Guanaco pier railway terminal.png

Photo, W. H. Rau, Philadelphia.

Railway Terminal at Guanaco, Pier in Distance.
 

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