8 AUSTKALASIAN ANTAECTIC EXPEDITION. 



north. Aurora Peak is the more easterly and lies on the west side of the Mertz Glacier, 

 1,750ft. above sea level and about 60 miles distant from Cape Denison. 



The rock specimens and the field data of these nine rocky areas were obtained 

 by the following : 



Cape Denison Large rock collection made during the winters of 1912 



and 1913 by Sir Douglas Mawson and Stillwell. 



Cape Hunter Visited in December, 1913, by Sir Douglas Mawson. 



Gt. Mackellar Island Visited in December, 1913, by Sir Douglas Mawson. 



Stillwell Island .... Visited in December, 1913, by Sir Douglas Mawson. 



Cape Gray Visited in summer, 1912-13, by Stillwell's sledging party. 



Garnet Point Visited in summer, 1912-13, by Stillwell's sledging party. 



Cape Pigeon Kocks . . Visited in summer, 191 2-1 3, by Stillwell's sledging party. 



Madigan Nunatak . . Visited in summer, 1912-13, by Stillwell's sledging party. 



Aurora Peak Visited in summer, 1912-13, by Madigan's sledging party. 



The total rock collection of the Australasian Antarctic Expedition is very large, 

 but the bulk of it comes from the glacial moraines at Cape Denison, and is not treated 

 in the following. The specimens secured by the sledging parties had necessarily to be 

 limited in size and number. Madigan collected the specimens at Aurora Peak, and 

 Laseron was a valuable assistant in looking after the rocks obtained by my sledging 

 party. No geological specimens were obtained by the other three sledging parties, 

 except a stony meteorite, a very extraordinary find made by Bickerton's sledging party 

 on the ice plateau. 



We have only been able, up to the present, to deal fully with the rocks which were 

 found in situ. This part is an essential preliminary to the study of rock types from the 

 moraines. Even this portion could not have been concluded without the active 

 co-operation of friends and supporters of the A.A.E. We are greatly indebted to 

 Mr. Herman, Director of the Victorian Geological Survey, who sanctioned the assistance 

 of the Victorian Geological Survey Laboratory. The 15 rock analyses that are now 

 presented are the work of the analysts in this laboratory, working under the supervision 

 of P. G. W. Bayly. 



Though a good portion of the work has been done while associated with the Adelaide 

 University, it was commenced and finished at the Melbourne University. Its progress 

 throughout has depended wholly on the assistance afforded by the Geological Department 

 of the Melbourne University and by Professor Skeats. The " sinews of war " have here 

 been provided in a very large number of excellent rock sections and much useful 

 criticism has been levelled during discussion at some of the conclusions. 



The illustrations at Cape Denison were obtained by Hurley, the official photo- 

 grapher. Laseron acted as photographer on my sledging trip, -and obtained some very 

 fine results. The photographs of the rock specimens and the microphotographs of 

 the sections have been prepared by myself with the apparatus and facilities in Melbourne. 



Finally, we must record the active sympathy of the leader of the Expedition, Sir 

 Douglas Mawson, who entrusted me with the work. 



