. The Popular science monthly . 20 grams 325° F., 7 hours, 21 dish . per cent. Character of residue Smooth Penetration at 77° F., 5 sec, 100 grams, No. 2 needle mm. Loss 20 grams 400° F., 7 hours, 24/ dish 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, 2£XH dish . 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.) ... per cent. Difference per cent. Inorganic or mineral matter per cent
. The Popular science monthly . 20 grams 325° F., 7 hours, 21 dish . per cent. Character of residue Smooth Penetration at 77° F., 5 sec, 100 grams, No. 2 needle mm. Loss 20 grams 400° F., 7 hours, 24/ dish 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, 2£XH dish . 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.) ... per cent. Difference per cent. Inorganic or mineral matter per cent. 100 per cent. Bitumen soluble 88° naphtha, air temperature (70° F.) per cent. This is per cent, of total bitumen per cent. Carbenes—per cent. bit. insol. CC14 air temp. (70° F.) None Bitumen yields on ignition: Eesidual coke per cent. Sulphur per cent. It appears from the above that the Bermudez asphalt is differentiatedcompletely from that found in the Trinidad pitch lake, by the absence of. Photo, W. H. Rau, Terminal at Guanaco, Pier in Distance. TRINIDAD AND BERMUDEZ ASPHALTS r75
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