Mines and Mineral Statistics. 
^33 
beds of marine fossils, wliich have been described as lower car- 
boniferous. These fossiliferous strata, range from near Port 
Stephens, in the county of Gloucester, through the north-easterly 
parts of the counties of Durham and Brisbane, including the 
sources of the Hunter Biver ; thence over the Dividing Eange to 
Nundle and Goonoo Goonoo, on the Peel Biver, and again further 
north to the Manilla and Horton Eivers. The interesting section 
near Stroud, Port Stephens, which is now being made by the A. A. 
Company, under the direction of Mr. J. Machenzie, the Examiner 
of Coal Fields, will afford much valuable information respecting 
the relative positions of the Lepidodcudron beds and the New- 
castle coal measures. 
Deyoi^iak. 
In the Bydal and Wallerawang Districts a considerable area 
is occupied by strata containing numerous Brachiopoda, and other 
fossils, which appears to be Devonian. The rocks consist of 
brecciated and pebble conglomerates, indurated quartzose, sand- 
stones, and shales. They are traversed in places by thin quartz 
veins, which have doubtless contributed the gold which is always 
found in small quantities in the gullies intersecting these rocks. 
Amongst the characteristic fossils may be mentioned several 
species of Spiriferse, which are very abundant, EhynchonellaD, 
Orthis, Pecten, Murchisouia (?), Trilobites, Modiola (?), Corals, 
Crinites, &c. 
The highest ranges in the district are of this formation. On 
and near Alount Lambie, which attains a height of 4,080 feet 
above sea level, and on Mount AValker, 3,803 feet, are beds of 
quartzose sandstone, about 1,300 feet thick, full of Spiriferfe. 
It is said that, from the summit of Mount Lambic, which has 
been cleared for the much-needed Trigonometrical Survey of the 
Colony, the late Sir Thomas Mitchell, and others, have seen the 
revolving light at Sydney Heads, a distance of about seventy-five 
miles. 
Mount Walker lies six miles east from Mount Lambie ; on 
the latter the beds have a general dip to the east, and on the 
former to the west, so that the intervening valley of the Cox 
Eiver lies in a great synclinal trough of the Devonian strata. 
About 1,000 feet above the Spirifera sandstones, are beds 
about 100 feet thick of hard quartzose sandstone, dipping east 
at 30°, containing the Lepidodendron MBieh was first discovered 
near Mount Lambie House, by the Eev. Mr. Clarke and Mr. 
Francis Lord ; five more specimens were afterwards obtained 
from the same place by myself and assistants, when engaged 
lately on the Geological Survey of that district. No fossils have 
yet been found in the sandstones and shales overlying the Lepido- 
dendron beds; but I believe that they all, including the lower 
