ABSTRACT OF PROCEEDINGS. Xl1ll. 
EXHIBIT : 
_ The right- and left-handed forms of piperitone and some 
new crystalline derivatives of inactive piperitone, by Prof. 
J. Read, and Mr. H. G. Smith. 
A short explanatory account of the specimens was given 
by Professor Read. 
JULY 5TH, 1922. 
The four hundred and thirtieth General Monthly Meeting 
was held at the Society’s House, 5 Elizabeth Street, at 
02S, D.m. 
Mr. CG. A. Sussmilch, President, in the Chair. 
Forty-one members and one visitor were present. 
The minutes of the preceding meeting were read and 
confirmed. 
The President extended a cordial welcome to Dr. Robert 
Trumpler, Assistant Astronomer, Lick Observatory, who 
Was passing through Sydney on his way to Western Aus- 
tralia for the purpose of observing the solar eclipse on the 
21st September, 1922. 
The certificates of two candidates for admission as 
ordinary members were read for the first time. 
The President announced that portraits of the late H. D. 
Walsh, B.A.I., a past President, and of the late Lawrence 
Hargrave had been presented to the Society and bung in 
the Society’s Hall. 
The President announced that Acting-Professor O. U. 
Vonwiller had been elected Honorary Secretary in place 
of the late Professor J. A. Pollock, and Charles Hedley 
elected to fill the consequent vacancy on the Council. 
The President announced that a Popular Science Lecture 
entitled :—‘* The Races of the World—their Migrations 
