a oF 
i Ar : 
28 W. H. WARREN. 
mittees appointed to consider special problems. ‘The object 
of the society is to encourage research on the physical 
properties of the materials of construction, and for the 
establishment of uniform international methods of testing. 
A perusal of the published papers reveal the vast extent 
and usefulness of the work accomplished, both from a purely 
scientific and technical view. I suggest that all those 
interested in physical science, engineers and architects, 
should become members of this association, and as I happen 
to be the oldest member amongst British subjects I shall be 
glad to receive the names of anyone desiring to become a 
member of this important society. 
The most comprehensive and valuable collection of papers 
and data on this subject published up to date is to be found 
in the communications presented before the International 
Congress on the methods of testing the materials of con- 
struction held in Paris in July 1900. The following papers 
describe some of the experimental investigations made at 
the P. N. Russell Hngineering Laboratory, University of 
Sydney :— 
The adhesion of cement mortars to bricks (1884). 
The strength and elasticity of Australian timbers (1892) 
The unification of the methods of testing materials 
and the precautions necessary in the accurate 
determinations of the various coefficients of — 
strength and elasticity (1897). 
The effect of temperature on the tensile and com- 
pressive properties of copper (1897). 
Some physical properties of nickel steel (1898). 
Investigation on the strength, elasticity and oles 
properties of trachyte (1899). 
Experimental investigation of the strength of brick- 
work when subjected to compressive andy trans- 
verse stresses (1900). | | 
