Reviews—On the Geology and Minerals of N. S.Wales. 231 
of the New Red Sandstone boundary in Cheshire. It ought to be 
taken further westwards; and we may add that it should also have 
been taken across the southern part of Glamorganshire. The exposure 
of Lias might also have been represented on fig. 1, plate x., in the 
same part of South Wales. These, however, are but trivial corrections 
which do not affect the main outlines of land and water as delineated 
on the maps. Space forbids our entering into further particulars con- 
cerning them, but we have probably said enough to convince our 
readers of the very great interest and importance of the work. Hach 
map, with the accompanying explanatory remarks, furnishes a most 
instructive lesson, and we feel grateful to Prof. Hull for having devoted 
such pains to the description and illustration of his subject, as the 
production of such results must have involved a great amount of study 
and thought. All geologists will likewise feel indebted to the Royal 
Dublin Society, for having originally undertaken the burden of expense 
in the preparation of the numerous coloured plates. 
IJ.—DerpartMent oF Mrives, SYDNEY. 
1. Minerat Propucts or New Sourn Wares. By Harriz Woop, Esq. 
2. Nores on THE Grotoey or New Sourn Watezs. By G.S. Wixkrnson, 
F.G.S8., ete. 
3. Description oF THE Minerats oF New Sour Waters. By A. 
Liversiner, F.R.S., ete. 
4. CaraLocur or THE Reports, Works, Mars or THE GEOLOGY, 
PaL®onToLoey, etc., oF THE AUSTRALIAN ConTINENT AND TasMANIA. 
By Rozerr Erurrines, jun., and R. L. Jacx, F.G.8., ete. (Sydney, 
1882.) 
\HE Report of Mr. H. Wood on the Mineral products of New 
South Wales is a valuable document, as showing the important 
progress that the mining industries of the colony has made within the 
last ten years (to 1881), when compared with the value of the produc- 
tion of each of the four preceding decades; in the last decade the 
value of production amounted to £23,441,890, during which time it is 
interesting to notice that tin, silver, lead, iron, bismuth, and asbestos 
have been added to the mineral products, which previously comprised 
only coal, gold, antimony, and copper. A detailed description is given 
respecting the discovery, character and occurrence of the minerals 
found, and their economic bearings as affecting the interest of the 
Colony. 
Mr. Wilkinson, in his Report, gives in a very clear and concise 
manner an account of the physical and geological features of New 
South Wales. After noticing the orographical features, the author 
describes the geological structure of the colony, in which most of the 
principal life periods of the Earth’s history are represented; and if we 
were to include the Eocene and Lower Silurian of Victoria, and the 
great development of Mesozoic rocks of New Zealand, the geological 
series would be almost complete. The oldest rocks hitherto determined - 
are the Upper Silurian, unless the altered sandstones and slates in the 
Murrambridgee district belong to the Lower Silurian; the latter group 
however in Victoria are estimated to be not less than 35,000 ft. thick. 
