174 W. R. BROWNE. 
from the junction at Goulburn. Itis 60 miles from Mount 
Kosciusko and is at a height of 2,662 feet above sea-level. 
II. Stratigraphical and Descriptive. 
SUMMARY.—The country dealt with in this paper com- 
prises a roughly elliptical area extending from Cooma about 
9 miles to the north, 6 miles to the east, and to the south 
and west 11 miles each: the greater part of this area has 
been studied in considerable detail. The rocks outcropping 
include, in addition to a metamorphic series whose age is 
uncertain, representatives of Ordovician, Silurian and (?) 
later Paleeozoic, as well as of Tertiary and Recent times. 
The metamorphic complex consists mainly of mica-schists 
and quartz-schists in great variety, phyllites and quartzites. 
These are intruded by a gneissic series. Three varieties 
of gneiss are recognised, differing in texture and general 
appearance, and quite distinct from each other. These 
will be known as the mottled gneiss, the Cooma gneiss, 
and the blue gneiss respectively. A pink and a white gneiss 
are probably genetically connected with the blue gneiss. 
Among the gneisses and schists is found an amphibolite 
intrusion of limited occurrence, with associated dykes and 
apophyses of fine-grained pyroxene-amphibole granulite 
and schist. A number of pegmatite dykes also intersect 
the metamorphic complex. 
The Ordovician rocks consist of slates, gritty slates and 
quartzites, and one small patch of limestone, unfossiliferous,. 
In the Silurian are comprised a considerable belt of lime- 
stone, slates, gritty sandstones, and quartzite; these lie to 
the east of the Ordovician rocks. On some horizons there 
is an abundant fossil fauna. Here too may possibly be 
included some very highly shattered quartz-porphyries 
which occur interbedded with the slates. 
For reasons which will be mentioned later, a number of 
igneous intrusions are referred to the Devonian or Carboni- 
