Xiv. ABSTRACT OF PROCEEDINGS, 
THE FOLLOWING PAPERS WERE READ: 
1. “The Darling Peneplain of Western Australia,” by Pro- 
fessor W. G. WOOLNOUGH, D.Sc., F.G.S. 
2. °“‘ Hxperiments on the behaviour of Iron in contact with 
Sulphuric acid,’’ by Professor C. H. FawsITT, D.Sc., Ph.D., 
and A. A. PAIN, B.Sc. Remarks were made by Messrs. 
F’. W. CARPENTER and 8S. RaDcLiIFF, Dr. MuRPHY, Mr.. 
STEEL and Judge DOCKER. 
3. ‘* Note on the Resinous Earth occurring at the head of 
the Nambucca River, N.S.W.,”’ by H. G. SMITH, F.C.S.. 
Remarks were made bythe President, Messrs. E. CHEEL,. 
R. W. CHALLINOR, A. A. HAMILTON, and R. T. BAKER. 
EXHIBITS: 
1. Mr. JOHN BARLING exhibited a diagram illustrating 
the rainfall over a period of 70 years at Sydney, Adelaide 
and Hobart, for 50 years at Brisbane, and 40 years at Port. 
Macquarie. An equalizing line was drawn separating the: 
high from the low-rainfall years, those above and below 
the line being shown by distinctive colours. 
2. Mr. A. B. HECTOR exhibited some slides to illustrate. 
processes employed in colour photography. 
Mr. J. H. MAIDEN read a note on ‘“‘Popple or Bopple 
Nuts” (Macadamia ternifolia). ‘Mr. E. CHEEL, this Journ. 
L, xx (1916), gives “‘ Popple Nut’? as a New South Wales. 
name for the common Queensland Nut (Macadamia). The 
nut being so common, and the name being new to me, I 
instituted enquiries, which had no result until Mr. HE. H.. 
PkEscoTT of Melbourne, informed me that the name is a 
corruption of “‘Bopple Nut,’’ so called because they are 
abundant at Bopple Mountain near Gympie, Queensland, 
where the aborigines used to, and still collect them. They 
are of course often cultivated now, but they form the basis. 
of an increasing trade from Gympie to many parts of Aus-. 
