341 
simple type. 
The mass of Cape Willoughby is to be correlated—based 
on the observations of Mr. W. R. Browne, B.Sc., detailed in 
a forthcoming paper—with the granite masses of Victor 
Harbour and Port Elliot, both on field and petrological 
evidence. 
CONCLUSION. 
In conclusion the writer would suggest that :— 
(i.) The masses of Cape Willoughby, Victor Harbour, 
and Port Elliot represent chonolitic masses of 
limited surface extent, which are connected at 
depth to a single batholitic chamber. — 
(ii.) These chonolites are arranged along a zone parallel 
to the strike direction of the older Palaeozoic 
folding. 
(ii.) These chonolitic intrusions, whilst related to the 
orogenic movements, were developed only at the 
close of the folding epoch, when movements were 
of a comparatively broad and simple type. 
The writer is indebted to Mr. W. R. Browne, B.Sc., for 
much help and advice during the preparation of this paper. 
DESCRIPTION OF PLATES. 
Prare XXX. 
View of granite outcrop forming part of the Cape Willoughby 
headland. 
Prare XXXI. 
.. _Fig. l. Sagenite web of rutile in quartz albitite. Magn., 
50 diams. 4 
.Fig. 2. A typical section of chequer structure in albite of the 
albitites. Magn., 53 diams.+nicols. 
