36 H. C. BUSSELL. 
volcanic activity to the oscillations of the earth’s crust, and to 
heavy sedimentations—a most important address full of carefully 
acquired facts bearing upon the subject. In another paper con- 
tributed to this Society, in November, 1891, on “ Artesian Water 
in New South Wales,” he discusses in a preliminary note, this 
important question from a geological point of view, tracing the 
cretaceous beds into the adjoining Colonies. To the Records of 
the Geological Survey of New South Wales, Vol. 11., part iii., 1891 
he contributed two papers, one on “ The Associated Minerals and 
Volatility of Gold,” in which he has brought together the results 
obtained by many workers in Australia, America, &c., on this 
subject in a form most convenient to those studying the formation 
of gold deposits, and the method of winning the gold from these 
deposits, indicating lines of investigation of great importance. 
Also a note on “ Mr. J. C. H. Mingaye’s Analysis of New South 
Wales Coals and Coke,” in which he shows, that with proper care 
in the manufacture, Australian made coke by thorough washing 
the coals before coking, would form excellent coke, nearly, if not 
equal to, English made coke. Also, in association with Mr. 
William Anderson, Geological Surveyor, some valuable notes on 
a collection of rocks and minerals from Mount Morgan, made by 
the late Mr. C. 8. Wilkinson. These have on important bearing 
on the arrangement of the gold in that mine of world-wide fame. 
In the Geological Department, University of Sydney, 1891-92, 
the Professor has been engaged in the classifying and arranging 
of various collections of rocks, minerals, and fossils, and there- 
fore, has had little time available for scientific research. The 
geological students, however, at the University have taken a 
a number of excursions, chiefly to localities in the neighbourhood 
of Sydney, where eruptive dykes of basalt occur in contact with 
sedimentary rocks. Typical collections of rocks and minerals 
were obtained by the students from such localities, and these are 
now being microscopically examined by this department. The 
evidence so far obtained seems to point to the conclusion that :— 
(1.) All the eruptive rocks in the neighbourhood of Sydney are 
