Miscellaneous Intelligence. 425 
town and landscape, and throwing its ruddy sheen upon the clouds. 
In the day time the smoke goes up like the smoke of a great furnace. 
It is not, however, at all times equally active, and occasionally we 
imagine that it has become extinct. But we are soon undeceived by 
new manifestations, sometimes appearing as if the molten lavas were be- 
ing ejected high in the air. 
As yet there has been no lateral outbreak and no longitudinal flow. 
The eruption is evidently in the vast summit crater Mokuaweoweo, 
where Wilkes encamped, and the action has been confined to this point. 
r fo 
crater for the discharge of the lavas, but none may occur. e crater is 
so deep and ample that the active forces of the eruption will, probably, 
be expended in the abyss where the fires are now raging 
During this summit eruption we bave noticed Kilauea with great inter- 
est, and have had numerous reports from there. We do not get evidence 
of any sympathy between the two craters. Old Pele is, as usual, with 
rior perhaps to the scientific; and we cannot b 
tion may prove to some extent instrumental in liealing the wounds crea- 
ted by civil war. 
Magnesia in hydraulic cements ; by H. St.Cratre Devittr.— 
compact crystalline translucent substance, consisting of magnesia 68°3, 
Am. Jour. Sor.—Ssconp Series, Vou. XLI, No. 123.—Mar, 1868. 
54 
