H. 8. I. SMAIL. CXCV. 
From this curve the coefficient for any head between ‘1 ft. 
and 1°0 ft. is easily read off. 
The whole work of river and artesian bore gauging is 
done under Mr. L. A. B. Wade, A.M.1.¢.E., Principal Engineer 
for Water Supply and Sewerage, Public Works Department. 
The author has carried out the field work for the past three 
years, and up to the present has done all gaugings made 
with the current meter. The author has made free use of 
the Water Supply and Irrigation papers of the United States 
Geological Survey in the first part of the paper dealing 
with the pulsations of flowing water. 
THH MURRAY WATERS. 
By R. T. McKay, C.. 
Abstract of Lantern Lecture. 
[ Delivered to the Engineering Section of the Royal Society of N. S. Wales, 
July 24, 1903. ] 
THE introductory portion dealt with the difficulties expeti- 
enced bythe Federal Convention in arriving at a satisfactory 
solution of the rivers question. It was eventually 
agreed by the Convention that trade and commerce, which 
embraces the navigation of the rivers, should be left to — 
Federal control, while the States should be allowed a 
reasonable use of the waters of the rivers for water con- 
servation and irrigation. The Murray Basin covers the 
immense area of 414,253 square miles, or 265,121,920 acres, 
being about one-seventh of the area of the Australian 
Continent. A great and disappointing disproportion exists 
between the volume of water which reaches the Murray 
