256 Review of Dr. Antisell’s Work 
described. After discussing in detail the light volatile ge oblatsiel by 
distilling coal-tar, he says, we have still to speak of the carbo-hydrogens . — 
from shales; a branch of industry w which we owe entirely to Selligue--cut off, 
alas! prematurely, in the midst of his career so full of discoveries and of useful 
works. As is well known, he obtained by distilling shales from the environs 
of Autun: I, volatile ethereal oils, II, fixed oils, II, oils contbiiied 
araffine from which he prepared grease for carriages, IV, parafline suitable 
or making candles, &c. Among all these bodies, Mallet pa ieee wehave 
pce to occupy ourselves with the volatile oils. Further on M. r s that | 
dred ie ieee aot 
We have been at a6 pains to ascertain whether the industrial distillation of ‘ 
shales, so well gre ounded jy Selligue, has been continued in France without 
poco a up to the present wer for we know of no reason to doubt th fact. | 
ertain it is that eoaloile pro ry Fre seh manufactories were exhibite bir ae 
lat we cannot explai r 
pews fro by several of the leading chemists of Great Britain on the occasion, 
of a trial,§ Young, v. White and others he . in June, 1854, in the Court 0 
mpbe 
Several aya for the production of bile! [ega oils] from bituminous sub- 
stances were meanwhile obtained in England. Butler, || for example, ee 
il and gas” pr 
distil “oem shales, &c. for the cits ; fe 
: purpose of obtaining oil and gas 
from naphthaline. The shale, best afte? wetting it with water if the princ 
object is to obtain oil, is distilled in common gas retorts under which a gentle 
_ fire is lighted. As soon as oil begins to flow over freely the fire is t0 
increase d and the retorts brought to a red bre a large quantity of gas 18 thus 
ys is . 
owes be purified by washing with s sulphuric acid, filtration, &c., oF 
may be used in the rough state for making oil-gas. The oils in their roug 
state are ona found oy free from oxygen, and if obtained hy the process 
described never contain so much as is contained in the coal-tar ert 
* It will be observed b ; ning Ad 
y the reader of Mallet’s treatise that he is intereste 
pes a single branch of the subject, viz, the volatile naphthas—“light st tuffs,” in” ” 
a: —— giving prominence to another portion . it, viz., the fixed, or a 
; an the holds — naphthas from shale in small repute, since in his opi 
in the matter of cost ho ‘hes from co 
EAN mio, 1361, Cat. 9), Bas-R. 8. 
510 of ae "ie vi, p. 3905 also t. iii, p. 315 ‘of the Liege edition; and B. vii, 
= Reported in Sa Seadarite London Jo py 
urn. of Gas Lighting, Aug. 10, 1854, vol. ii, P. 
Patent granted Jan. 29,1883. Specification ers of the English Patent Office 
