TWENTY-SIXTH ANNUAL MEETING. 39 



50 to 140 90cc, 8.1 per cent. 



140 to 160 70cc, 6.37 per cent. 



160 to 205 167CC, 15.18 per cent. 



205 to 250 125CC, 11.86 per cent. 



250 to 300 153cc, 1.4 percent. 



300 to 350 66cc, 6 percent. 



250 and above: 



1 frac 120CC, 11 per cent. 



2 frac 70cc, 6.36 per cent. 



3 frac 15.45 per cent. 



Several specific gravity determinations, made on the different distillates, 

 gave the following results: 



Temperature 50 to 120 0.8082 



Temperature 120 to 160 0.8282 



Temperature 160 to 185 0.8542 



Temperature 185 to 205 0.8763 



Temperature 205 to 250 0.8944 



Temperature 250 to 275 0.9144 



Temperature 275 to 300 0.9220 



Temperature 300 to 350 0.9249 



Temperature above 350: 



1 at 0.9424 



2 at 0.9518 



3 at 0.9140 



The quantity of light oils is small— about 9 per cent, while the distillates 

 between 150 and 300, usually considered as burning oils, form nearly 50 per 

 cent, of the whole. Above 300 there distill over products suitable for lubri- 

 cating purposes. From the higher portions above 375, paraffin solidifies out 

 on cooling in a freezing mixture. 



The high heat "cracked" or split up into lighter oils the last portion that 

 passed over. This was shown in the way it distilled and in its specific 

 gravity, 0.9140. This cracking increases the amount of illuminating oils. 

 Below 275 the amount of unsaturated hydrocarbons is unusually small for 

 petroleum, while above that temperature the percentage of unsaturated 

 bodies increases. 



