Mineralogy and Geology. 273 
the eruption of the Tomboro, as described by Raffles, in the. eastern 
ening appears to have exerted a no less astonishing projectile 
fore 
8. Kolcano-in the Red Sea; (Athen., Nov. 28, No. 996.)—A des- 
patch has been received at Lloyd’s from the East India House, inclos- 
ing a copy of a letter from Lieut. Barker, of the Hon. East India 
pany’s steam-vessel ictoria, announcing that on the 14th of August 
last, smoke was observed to issue from the summit of Saddle Island, in 
lat. 15° 7! N., long. 42° 12’ E.. The weather, at the time, was very 
squally, with Hm and lightning. Saddle Island is one of a group 
ealled Zebayer Islands in the Red Sea; in the direct track of vessels 
proceeding up and down. They are all of volcanic origin, but there is 
neither record nor tradition of their aving been in active operation. 
Jibble Seer, in lat. 15° 32’ N., and long. 41° 55’ E., was observed to 
be smoking when visited by the officers of the Benares during the sur- 
vey of the Red Sea,—but never since. There is a tradition among the 
Arab pilots of its having been on fire some fifty years ago; and it bears 
among many of them the name of Jibble Dookban, or Hill of Smoke,— 
and has the appearance of having oe in active operation at a much 
later period than the Zebayer Islan 
robable Submarine Galati Aduicewtat Dec. 26, No. 1000.) 
—The shi ip Helena on her late passage from Batavia to Canton, when 
in latitude 16° N., long. 125° E., fell in with immense fields of floatin ng 
pumice stones, apparently not having been long erupted, many of whi 
were as large asa common bucket. The os meses to windward was 
the Ladrones, about 1000 miles distant. It seems impossible that they 
could have come from thence—nor could they va come from Luzon, 
res to leeward. 
0. Coal on the Rocky Mownterins; disknvered by Capt. Frémont ; 
ro James Hain, (Frémont’s Expedition, p. 297.)—A few miles up 
Muddy Be (long. 1119, lat. 413$°,) Captain poem collected a 
beautiful series of imens of fossil ferns. The rock is an indura- 
ted clay, wholly destitute of carbonate of lime, and wets be termed a 
* fire cla These are probably, geologically as well as geograph- 
ically, higher than the oolite specimens, as the rocks at this place were 
observed to dip in the direction of N. 65° W. at an angle of twenty 
degrees. This would. show, conclusively, that the vegetable. remains 
Sccupy a higher position than the oolite. Associated with these vegeta- 
ble re Temains, were found several beds of coal, ae in thickess 
The section of strata at this — is as follows : — 
Sandstone, . ‘ i E o Hilger etsy, wcpeil 
Coal 
> . . . * ies 
Coal, 
Indurated clay, with vegetable remains, 
Clay, . 
Coal, 
Clay, - ° . . * , il ss 
Coal, 
> * me #43 * . * 
0 
1 3 
ae 
20 0 
5 0 
5 0 
5 0 
i ‘ Coa > fh ; ; 4 
Szcoxp Sexizs, Vol. II, No. 8.—March, 1847. % 
