president's address SECTION c. 229 



EXPLANATION OF PLATES. 

 Plate I. 



Fig. 1. — Geological Sketch Section from W. to E. through Knowsley East, 

 North of Heathcote, to show the relation of the diabases and chert to the 

 Lower Ordovician sediments and of the Silurian and Glacial beds to the 

 Ordovician series. 



Fig. 2. — Geological Sketch Section from W. to E. through Western 

 Victoria to show the relations of the diabases and cherts, the quartz 

 porphyries, and the trachytic rocks to the sedimentary rocks associated with 

 them. 



Plate II. 



Fig. 1. — Geological Sketch Section from N.W. to S.E. from Bindi to 

 Buchan, East Gippsland, to show the relations of the Snowy River porphyries, 

 the Buchan pyroclastic rocks, and the older basalts to the sedimentary rocks 

 associated with them. 



Fig. 3.' — Geological Sketch Section from W. to E. through North Gipps- 

 land to show the relations of the serpentines. Mount Wellington rhyolites, and 

 melaphyres, and the older basalt to the sedimentary rocks associated with 

 them. 



Plate III. 



Fig. 1. — Geological Sketch Section from S. to N. through Mount Macedon 

 to show the relations of the dacites, alkali rocks, and newer basalts to one 

 another and to the sedimentary and granitic rocks associated with them. 



Fig. 2. — Geological Sketch Section from W. to E. from Albion to Royal 

 Park, near Melboui-ne, to show the relations of the older and newer basalts to 

 the Silurian and to the Kainozoic sediments. 



