= 
Ne) 
‘55, 
344 On the Igniting Point of Petroleum. 
TABLE OF GRAVITIES AND IGNITING PoINTS oF 
COMMMERCIAL PETROLEUM. 
Igniting point of vapour in degrees 
Fahrenheit. 
Specific 
Name, Brand, a Dis- Gravity ! inn 
tinctive Mark. ater Staion 
1,000.) Beer Without | ee 
agitation. | sitation. 
“Woodville? 00533 796 80 76 70 
A 797 98 83 78 
wotandards? <7. 1. 798 96 95 85 
MC AVANTE Pet 798 81 80 70 
B 799 104 87 71 
Seeman: 7 (0-0 660. 799 94 86 85 
SeELutchinson 77... 800 go 86 84 
SMG MCILeD Sc hs 801 QI 81 78 
“ American Paraffin 
Oe ee ua: 8o1 92 80 68 
-z@omimercial.” .°.7' |, 803 104 81 79 
** Amercn. Petroleum,” 
On er 804 134 134 rigs 
.9 » No. 2. | 805 93 90 74 
35 5 No.3: 806 83 76 66 
“Common Paraffin 
OM ah bead! coc a 806 105 go 83 
ccmsrilliamt 4s) ds, ve 806 83 74 72 
“Young’s Paraffin 
Oil” (not a Pe- : 
troleum)'* <. . 819 116 97 gI 
* This is an interesting specimen. Its light colour, both when 
purchased and after being exposed to the light for some time, and 
its specific gravity, indicate that 1t is really a petroleum, and not 
a paraffin oil. It was purchased at a retail shop in Drury lane, 
London, as “‘ our best, 44d. per pint.’””’ Another quality, sold at 
the same shop at 4d. per pint, had a higher specific gravity, 806, 
but much lower igniting-point. Tried in the manner recom- 
mended at the end of the paper, the “best” gave off inflammable 
vapour at 114 deg., the other at 86 deg. The properties of this 
sample prove, or at least indicate (for I could not get at the 
bulk) that it is easy to supply the public with a perfectly safe 
petroleum at a reasonable price, a petroleum so low in specific. 
