ee ee 
Mineralogy and Geology. 437 
father] in the Philosophical Transactions. With these remains, were 
ound teeth and bones of fishes and of four or five genera of reptiles. In 
the strata of Oxford clay lignite occurs abundantly, and in some places 
Very large trunks and branches of coniferous trees, the wood retaining 
{s structure and tenacity. The whole deposit resembled a mud-bank of 
a deep sea to which trees and other terrestrial plants, and littoral shells, 
had been drifted and mixed up with the relics of the mollusca of the 
Middle Island of New Zealand ; by G. A. Mantett, Esq., 
F.R.S., &c., (Ibid.)—This memoir consisted, Ist, of a descrip- 
Middle Island, extending from northwest of Bank’s Peninsula 
ago, a distance of about two hundred and sixty miles. 2dly,a 
ic schists, these are traversed by dykes of basalt, amygdaloids, &c. 
Obsidian, vesicular lava, and voleanic grits, in many places flank the 
sides of the great mountain chains which reach above the line of per- 
petual snow; and along the base of the range and over the adjacent 
plains are thick deposits of conglomerates and rich alluvial loam. 
ce) 
chalk of England; even the soft parts of the bodies of these minute 
animals are in many instances preserved. The deposit next in age is 
a blue upper tertiary clay full of marine shells of species still existing 
in the South Pacific Ocean. 
Lastly, a ferruginous sandy grit with shells of recent marine species 
the whole are spread, uncon- 
Low hills of marly sand occur 
rn drift; this 
Of the fossil 
