PHYSIOGRAPHY OF EASTERN NEW GUINEA, ETC. 107 
evidence for the late date of the uphft of Hastern Australia 
is summed up by Professor David in the ‘‘ Federal Hand- 
book,’’ pp. 252, 287. Mention is here made only of the 
obviously recent age of the canyons of the rivers of Kastern 
Australia. 
It is very probable then that, as far as Eastern Aus- 
tralia is concerned, the warping of the great peniplain was 
part of the third series of movements. 
I have ventured to suggest this theory as a possible 
explanation of the direction of the voleanic range of New 
Britain, and also as the result of personal observations made 
in Hastern New Guinea, New Britain, New Ireland, and the 
Northern Solomons. It is based almost entirely on physio- 
graphic evidence, and awaits confirmation or otherwise 
until a more detailed examination of the area is available, 
