464 NEW SOUTH WALES. 
around Port Jackson, or a quarry anywhere, in which these anoma- 
lous layers cannot be distinguished. In many parts of the city of 
Sydney, the same may be seen by the roadside; and about the Para- 
matta quarries, and in the Illawarra range, similar facts are exhibited. 
The following figure, taken at a quarry near the residence of Alexander 
McLeay, Esq., is a very common case. It consists as follows :— 
A. 4% feet.—Fine, light sandstone; the lower part composed of oblique layers of deposi- 
tion, while the upper part has no traces of this structure. 
B. 4 feet—Same sandstone appearing in some parts to consist of two or three distinct 
layers, which become united again a few yards to the north, where others 
commence. 
C. 5 feet.—Same sandstone: but imperfectly separated from B; the lower portion is 
formed of two or three small layers, each distinct, and consisting of oblique layers ; 
this part of the layer widens to the right, and contains a central portion, having hori- 
zontal lines of deposition. The oblique lines below in some places curve and be- 
come horizontal. 
D. 6 feet—Same sandstone: narrows rapidly towards the right (or to the northward) ; 
above, its lines of deposition are horizontal ; below this there is a central portion in 
which these lines are oblique, and between some of these subordinate oblique layers 
there are thin coaly seams, as represented by the black lines in the figure. The 
lower part of the layer is also composed of obleque layers; but they occur in three 
or four serves. 
E. 3 inches.—A thin layer of argillaceous shale, about three inches thick to the right, 
but running out to the southward ; it also disappears to the northward, after continu- 
ing a few rods. It contains several thin seams of bituminous coal, one of which is 
half an inch thick, and is very fine coal, with no vegetable structure apparent to the 
naked eye. 
F. 5 feet-—Same sandstone as above: near the upper limit there are some fine wavy 
lines of deposition, which run into a thin layer composed of oblique layers; and a 
