INADGURAL ADDRKSS. 9 



twenty miles up the river, sandstone with included fragments of 

 older rocks ; at Jervis Bay and Bowen Island, horizontal sand- 

 stone ; at River Clyde, coarse argillaceous schist, like greywacke 

 in appearance ; at Bateman Bay, clay slate in vertical position. 

 [This author added, thus, a number of valuable facts to the geology 

 of New South Wales, and had they been successfully systematised 

 the contribution would have been a great advance to our know- 

 ledge of stratigraphical geology.] 



Cunningham, Allen*, Botanical Collector for Kew Gardens, 

 journeyed in 1823 from Bathurst to Liverpool Plains, and thence 

 t'l Darling Downs, and though the special object was botanical, 

 yer, geography benefited. Several passing referenees are made 

 to the rocks encountered, and he describes the lihysiographic 

 features and the leading rock structure of the Blue Mountains. 

 He discovered the Ipswich coal formation on the Brisbane River 

 in 1 828. His collected geological observations made on these and 

 other occasions Avere communic.tted to the Geological Society of 

 London. f 



OxLEY, John;]:, in 1823 discovered the navigable river Brisbane, 

 and in his official report are incidental references to geological 

 features, such as those relating to Facing Island (which is 

 uurolored on the Geological Map of Queensland, 1893), which 

 protects Port Curtis — ' There are many indications of mineral 

 substance ; some seemed to contain copper and tin." 



Uniacke. in his narrative of Oxley's expedition of 1823§, 

 describes the basal part of Small Island, off Point Danger, as '' of 

 volcanic origin, and the superincumbent rocks to be basaltic," 

 and these are compared with the Giant's Causeway in the north 

 of Ireland. The right bank of the River Boyne, Port Curtis, is 

 stated to be composed of fine slate, and the left of close-grained 

 .granite. (This is in agreement with the geological survey map of 

 1893 — the slate rocks belonging to the Gympie Formation). 



Lesson, the naturalist to the French surveying ship. La Coquille, 

 and author of the history of the voyage during the years 1822-5, 

 describes the geological features about Port Jackson as constituted 

 of— 



1. Granites, quartziferous syenites, and pegmatites. 



2. Stratified lignites, which are mined at Mount York at an 



elevation of 1,000ft. above sea level. 



Field's Geojrraphical Memoirs. 1825. + Troc. Geol. Soc, vol. ii., ]). 1U9. l'*34. 



X Expedition to Moreton Buy in Field's Geogr. Mem. 1S25. 

 \ Field's Geogr. Memoirs. 1825. 



