120 Review of Dr. Antisell’s Work, &c. 
it was fit for use in common lamps. This has, indeed, he says, been the 
subject of many researches, but no one has hitherto succeeded in avoiding the 
empyreumatic odor, and the very inflammable products which caused the 
oil to rise too quickly to the summit of the wick. He goes on to define the 
difference between his purified oil and the crude oil obtained directly from 
shale. ‘On the = of March, ~~ a a e specifies certain additions and 
improvements to the preceding pat I should add, he says, that I now 
$ 
ret fom - employing these products in the a ts and 
es 
eed 
feo differences in the shales, &c. which I treat; but the following products 
are alw taine 
hts Polatile: oil mute or less se eter oo S to the source from 
his can b 
I. Ali i 
which it is derive a e used in painting, for dissolving 
resins, &c., for ighting br ate it (it being very volatile) or for the pro- 
duction o gas a ording to my syst 
IL. A fat oil aly slightly volatile, and having but little odor; this can be 
used for domestic — ta in ordinary lamps with or without admixture of 
a or vegeta 
t can 
omit loner affords a very pie soap; with ammonia ied fat ‘foray: a wae 
pom 
IV. ‘An odorless pitch a thes aa: and eae suitable for preparing 
a black solid varnish for p serving wood, iron-work, &c, 
In a in alluding to the use of his oils in sib re eatment of 
cutaneous diseases speaks of the three large oe tae for ae beter 
of bituminous shale which he has erected in the Department Saon ire, 
and mentions the fact that the oil (crude ?) is furnished at the rate of about two 
cents [ten centimes pound, 
he question of price is again discussed a few years later, when Selliguel 
says: it has been stated that crude shale oil costs only $150 per 100 pounds, 
and that it contain: cent of a very light volatile othieifeal oil well 
suited to afford light, as well as 40 per cent of a fat substance ow 
99 " 
even 2/ cents when delivered in Paris. From ever peter! d measures of 
crude oil are obtained (by distillation) 20 measures of volatile oil boiling * 
00° C.=212° F.; 30 measures of less yolatile oil oaoee at | 
C.=302° to 500° F.; 14 measures of an oil containin g paraffine 
measures of ee measures being lost. In purifying these products “6 
The clearest of all Selligue’s specifications, however, is that of the patent 
ee os him March 19, 1845§ for the distillation of bituminous shales and 
or ity aes escribing the various forms of poperae eid i Manette f into one 
which superheated steam was introduc , he en e produce cts of 
distillation as follows: I. A white, alinant edad. ses “timpia mineral oil— 
somewhat soluble in "atechol_Swieh may be used as a solvent, or for purpos® 
of illumination in suitable lamps, &c. 
silencer, 
* This “ soap,” mokortntele, is described more fully in the sequel. 
a ; also Annalen der P. an acie, cin Weehler u. Liebig, 
} Dingler’s Palytecdntiohes Journal, xci, 198 ; from the Moniteur Industriel, 184% 
oe Brevets d' Invention, [new series, (loi, du 5 Juillet, 1844,) ] iv, 30. 
