BY THE REV. J. MILNE CURRAN, F.G.S. 187 



about Dubbo. The rock as seen in the railway cuttings is traversed 

 by numerous joints, that will facilitate the working. 



Basalt, — The Dolerite about Dubbo is not sufficiently exposed to 

 encourage its being sought as a building stone. For road purposes 

 there is practically an unlimited supply within the circuit of a mile 

 from the town. 



Gold. — Gold has been worked, but in every instance outside the 

 limits of the sandstone rocks, except when, as it often happens, the 

 older rocks drain across them. Auriferous quartz reefs have been 

 worked at Tomingly to the south west. 



Iron. — The only source of iron known is the clay iron stone 

 already described. It is best seen along the valley of the Talbragar. 

 Taken with the coal and limestone, which is within easy reach, 

 it may prove valuable. 



Copper, galena, diamonds (from the gravel in old river beds), 

 topaz and opal have been met with, but not in quantities of any 

 " economic " value. 



The microscopic character of the granites and basalts is reserved 

 for another and concluding paper on the Geology of Dubbo. 



NOTES AND EXHIBITS. 



Mr. Macleay exhibited in illustration of his Paper on the Genus 

 Laminima, all the known species of the genus, excepting L. KreffUi, 

 the type of which is in the Australian Museum. Mr. French's 

 beautiful species L. Muelleri excited much attention. 



Dr. von Lendenfeld exhibited a Syphonophore of the Genus 

 Dij^hyes, found at Bondi by Mr. Whitelegge. 



Mr. Masters exhibited well mounted specimens of two very rare 

 Australian Butterflies, Xenica Kershawi from Yictoria, and 

 Heteronym.ijha Digglesi from Five Dock, near Sydney. 



