BY W. F. PETTERD. | 15 
Mr. W. A. Dixon, F.I.C., gives the following result of an 
analysis of this substance, viz :— 
VAT OI Metres cds saaiicece cuecatcesmccsccbeec tes dcsiseess None 
Volatile ly @rocHrDOMs? v.csccrcc.c.cre-s+ss0s00e.. 50°86 
ICOM aT DOME. sees conessscisidess acces cess. 43°69 
PAUSE Naeree sis cls ats teioele «eee aie'smteaiatees SECC ADO DONOR EEG 4°12 
SIL PUNE tesa paiesistvesisien recideweenest sissies nesaseles 1°33 
NOt sc cvaessenescvetnetarececsas 100°00 
In a communication to Mr. Bateman, this gentleman states— 
“Coal of this quality should be of value for gas-making, but it would 
be of little use for oil-making, as it would yield more tar than oils, 
which would be difficult to purify. Iam satisfied, from its appearance 
and behaviour when subjected to heat, that it ‘would give rather 
aromatic hydrocarbons (Benzene, Napthalis, &e.) than fatty ones 
(Olefines and Paraffin). It is not a Cannel (from which oils are 
not made) and not a shale, from which they are. Its colour, both 
in mass and powder and its fracture in mass, is different from 
either—and this difference is emphasized by the coke which it 
yields on rapid heating, neither Cannel or shale yielding a true 
coke. There seems to be something considerable extracted by 
chloroform, which is coloured brownish-yellow by the powder. T 
would be inclined to name the mineral Pitch Coal, as being most 
expressive of its appearance, and by its difference from “highly 
bituminous coal as that of Stockton or Hetton mines, w hich T 
consider to be resin coals.” 
50. CINNABAR (Sulphide of Mercury). 
It is reported that this mineral was found many years ago in 
the Fingal District and also at Bagdad, and still more recently at 
Dundas, but no confirmation has occurred in either case. 
51. CHRYSOLITE (Silicate of Magnesia and Iron). 
Also known as Olivine. As a rule rocks containing this species 
are no good for the precious metallic minerals, and its occurrence may 
with some certainty be looked upon as an indication of their non- 
existence. Large specimens form the green stone termed Peridot, 
but those occurring here are usually too small to be of use to the 
jeweller. The crystals of this mineral are fairly common at 
several localities in Europe, but are very rarely found here or 
in Australia. Found in pale green semi-transparent particles in 
basalt, Dundas; in amygdaloidal basalt at Bischoff and the 
Wilmot River; in granite, Flinders Island (Gould); Upper 
Forth River, massive in basaltic dyke; of a yellowish-green 
colour in coarsely crystalline dolerite, Paddy’s Sugar Loaf 
Mountain (W. R. Bell) ; near Hampshire Hills; Deloraine ; as 
