ANNIVERSARY ADDRESS. 15 
gating the mode of occurrence and crystallization of gold, in 
addition to his researches upon the minerals of New South Wales. 
Dr. Martin and Mr. J. McGarvie Smith have in the Physio- 
logical Laboratory at the University, and at Mr. Smith’s private 
laboratory, Woollahra, demonstrated the nature of, and separated 
the toxic principles contained in Australian snake venom, and 
investigated the various conditions which are capable of altering or 
destroying its virulence. Since then Dr. Martin has been engaged 
in further chemical research of an interesting nature dealing with 
the same subject, and also has gone far to answer the question 
“* How does it act!” by means of the most accurate methods of 
experiment known to modern physiological science. These in- 
vestigations into the action of snake venom have been greatly 
assisted by the generous aid of the New South Wales Branch of 
the British Medical Association in granting £50 to assist in 
defraying expenses. In addition to the above, during the past 
year he has been engaged in completing an investigation into 
some points in the dynamics of the circulation, more especially 
concerning the pressure in the systemic and pulmonary veins under 
various conditions. 
_ In the Geological Department at the University of Sydney, in 
addition to the usual practical work for teaching purposes, a certain 
amount of research work has been accomplished. Geological 
Excursions have been held to Euroka Creek, near Penrith, the 
Pyrmont Sandstone Quarries, and the Bulli Coal Mine; and during 
the September vacation the Third Year students were taken to 
Kiama for a fortnight for the purpose of collecting rocks and 
fossils, and constructing geological maps and sections of the 
surrounding district. At Euroka Creek conclusive evidence 
was obtained of the intrusive character of the circular mass of 
eruptive rock about one-quarter-mile in diameter, which forms the 
amphi-theatrical depression amongst the Hawkesbury Sandstone 
Hills, known as Euroka Farm. 
At the Bulli Coal Mine some fine specimens of secondarily 
formed crystals of epsomite were obtained from a dolerite dyke, 
