Geology and Natural History. 308 
mouth of Kenmare River. The shores of Lough Kay and Valen- 
tersecting the latter in dikes 
In the Lower Carboniferous, occur the trap rocks of the Limer- 
ick basin, cotemporaneous with the toad-stones of Derbyshire, the 
trap and porphyrite ashes of the oe valley of Scotland forming 
the Kilpatrick, Campsie and Dalry Hills. ‘These Limerick trap 
= are of two times of eruption, the earlier being the most im- 
rides 
in Ireland is 2,200 to 2,300 square miles, These vie are briefly 
described, from an article by Professor Hull, in the last seat beals of 
this Journal, at page 147, 
7. Asphalt sabia a the shale of the Huron River, Ohio ; by 
of. A. —In the number of the Annals of the Lyce um 
tic coal or albertite of New Brunswick. The seam ia ean two 
hy and it is traversed by innumerable sheets of sulphate of 
a 
. 8. Newberry adds a note to the p gd —) a there 
are many localities of similar material in ntucky ; 
and that it occurs in fissures of the Huron shale a was ormed 
He 
observes that this shale, “which is the equivalent of the rag ee 
group of the New York ge ologiata, contains throughout from 10 
to 25 per cent of carbonaceous matter, and is the source whence 
Most of the oil is derived both in Pennsylvania and Ohio. 
ruption of Tridimitic Ashes.—Dr. A. Ba —— of Zurich, 
€ with that species in specific gravity, degree of solubility in 
i action vot ar ed light cient preiten His announce- 
pdb tl ora fore the Society of Natural History of Zuric 
on the 4th af ge , 1875.—R. Com. Geol. d Italia, 1875, 197. 
"the Colorado River of the West, and its 
Tributaries, kes in 1869 to 1872 under the direction of a 
tary of the Smithsonian Ss ) by Prof. J. W. Power 
292 pages, 4to, with many plates, 8 maps.—The Fa iahaanlan 
Institution’ has sho own, by this volume of Professor Powell, 
