RELATIONSHIPS OF THE AUSTRALIAN CAINOZOIC SYSTEM. 
or Spring Creek series in the Cainozoics ; a view indeed held by 
Messrs. Tate and Dennant, the former using the term Post- 
Eocene for these beds. If such be the case, this series should 
be either represented between the upper and lower beds in 
the Hamilton district, or should be negatively represented by an 
unconformity. That tins middle series is present the following data 
will show : — 
During a visit paid to this district six years ago I was struck 
with the important development of the pink limestone with echinoids 
( Eupatagus rotundas and Linthia mooraboolensis) , polyzoa, and fora- 
minifera. This rock can be followed from the bed of the Grange 
P4 
Burn at Forsyth’s, past Henty’s, where it is developed on the west 
in a limestone cliff 60-80 feet high, with caves, and can be traced 
down the Grange Burn for If miles to its junction with Muddy 
Creek (Fig. 13). Anent this polyzoal limestone Mr. Dennant 
[ 43 ] 
