The late Explosion of the Coal-Mine at Newton-Green. 67 
Silieay ii.) veces FeO 
nie tere os 5. re, SOO 
Alumina .. 1.2.00. 0°50 
Oxide of tin ....... 0°50 
Saeatits,. sib Gs warn! SOR 
Carbonic acid,&c. .. 5° 
98- 
with traces of magnesia and muriatic acid. 
Now, in the first place, this substance cannot. with accuracy 
be considered as a zeolite, for all species of that mineral contain 
at least one-tenth of alumina (vide Analyses by Klaproth, Smith- 
son, Gehlen, Vauquelin, &c.); whereas the mineral in question 
does not contain above 1-200dth of that earth. 
Secondly. Notwithstanding its similarity in specific gravity 
and in phosphorescence, it is impossible that it can be correctly 
classed as a tremolite: for the analytical experiments of Klap- 
roth, Chenevix, Laugier, and other chemists, have demonstrated 
that magnesia is an essential ingredient of that fossil; while in 
_the mineral analysed by Dr. Kennedy the quantity of magnesia 
was unappreciable. 
Thirdly. No other mineral, as far as my knowledge extends, 
i$ at all analogous, in point of composition, with that to which 
these observations relate. 
It would seem, from the above considerations, that this cu- 
rious mineral constitutes a distinct species ; and as it has hitherto 
been found at Edinburgh only, it is suggested that Edinite would *. 
be a suitable appellation for it. 
THE LATE EXPLOSION OF THE COAL-MINE AT NEWTON-GREEN, 
AYR. 
The particulars of this accident were noticed in our last num- 
ber: the following explanation of it has been since given by the 
Ayr Journal: 
“* We are requested to state, that the safety-lamp which oc- 
casioned the explosion by which Mr. Millar lost his life, as men- 
tioned in our last, upon being examined, was found to have a 
small defect at the socket. We are further informed, that a 
candle was used in the lamp, by the melting of which some tal- 
low had fallen on, and adhered to, the wire-gauze. From these 
facts, and from that formerly stated of the lamp being excessively 
heated, it is concluded, that the combustion proceeded either 
from the communication of the gas with the flame through the 
defect in the socket—from the illumination of the grease on the 
gauze by the high temperature of the lamp—from the extraor- 
dinary heat of the lamp itself—or from a combination of these 
circumstances, 
