6) 
On 
PHYSIOGRAPHY OF EASTERN NEW GUINEA, ETC. 
Notes on the Physiography of Eastern 
New Guinea and Surrounding Island 
Groups. 
WITH SPECIAL REFERENCE TO THE VOLCANIC FEA- 
TURES OF THE RABAUL DISTRICT OF NEW BRITAIN. 
By C. H.-Massry. 
(Plate III, and Four Text Figures.) 
(Read before the Royal Society of Queensland, 24th July, 
1923.) 
CONTENTS. 
1.—Introduetion a a ce Fy 5 3 sf SOO 
If.—General Physiography .. é se cold 
I11.—History and Development of fe Rabaul V aleune Serer =o) Make: 
LV.—Present Conditions of the System ac ad: ue J 3, AO 
V.—Conelusions— 
G.) The Volcanic System vi ie ote Aa 
(ii.) Physiography af By a x go UO 
V1I.—Description of the Plate mn rh be 3% ae ADS: 
INTRODUCTION: 
I HAVE written this paper at the suggestion of those 
who think that the information given will be of interest 
and value to Australian Geology. By way of introduction, 
I must be allowed a few words cf apology. I have had a 
certain amount of diffidence in preparing these notes, for 
several reasons. The whole area is so wide and so little 
known that there is not a great deal of reliable information 
available. The observations reported in this paper were 
made easually without any idea of future publication, and 
so lack the care and accuracy demanded in that case. A 
space of four years has elapsed since they were made, and 
though time allows maturer reflection, yet many facts are 
not so fresh to the mind as formerly. However, with these 
limitations, [ propose to discuss the physiographic features 
of Eastern New Guinea and the adjacent island groups, 
with special reference te the voleanie features of the Rabaul 
