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PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



[Mar. 20, 



in all Australia *. Loose on the surface in the neighbourhood of 

 Grafton, on the Clarence Eiver, a portion of an Ammonite was also 

 picked up and brought to me ; but it may have been dropped by an 

 emigrant from Europe, and is of no value in so important a question. 



Different, however, is the testimony of my late friend Leichhardt, 

 who was both a good botanist and a good geologist, and who left 

 with me his MS. journal, in German, of a geological excursion to 

 the northward in the year 1842. He therein mentions that he 

 obtained a plant (named by him, doubtfully at the time, " Equisetum 

 obtuse striatum?" but which was afterwards found to be a Phyllo- 

 ilieca) from one of the lowest beds in the section at Harper's Hill, 

 so well known for its abundant " Lower Carboniferous " animal 

 forms ; and he further says that he considers that bed was equivalent 

 to one of the beds in the cliff at Newcastle. There is no doubt 

 that that plant was in the midst of, and far below, shells and other 

 fossils respecting which there is no dispute. It is, in short, a fact 

 well agreeing with the evidence from Stony Creek. 



In venturing on this extended discussion of a difficulty, my chief 

 object has been to show that the age of the Australian coal-beds is 

 not sufficiently determined at present to justify their being used as a 

 test of "Jurassic" age of coal-beds in other countries. 



At the same time I may add how much I have been gratified in 

 obtaining Baron de Zigno's work, and that, notwithstanding ail I 

 have written, I am open to the conviction of evidence. 



4. Prof. Huxley, Sec.G.S., made the following observations on 

 some Reptilian Remains from North-western Bengal: — Some bones, 

 found by Mr. Blanford in the uppermost portion of the "Lower 

 DamQda" group of strata in the Banigunj coal-field, and forwarded 

 to Prof. Huxley by Dr. Oldham, have proved to belong to Labyrin- 

 thodont Amphibia and Dicynodont Reptiles, — hereby affording new 

 and interesting links with the fossil fauna of the Karoo Beds of 

 South Africa, and largely increasing the probability that the rocks in 

 which they were found are of Triassic age. 



Notes on some further Discoveries of Flint Implements in Beds of 

 Post-Pliocene Gravel and Clay ; with a few Suggestions for Search 

 elsewhere. By Joseph Prestwich, Esq., F.R.S., Treas.G.S. 



[This paper, read on May 8th, is, by order of the Council, printed in the 

 August No. of the Journal, that it may be as useful as possible to geologists 

 during their autumn excursions.] 



Since my communication to the Royal Society f on the discovery 

 of Flint Implements in post-pliocene beds at Abbeville, Amiens, 

 and Hoxne, similar implements have been found in a few new lo- 



* Fossils of Upper Mesozoic age have been brought to England from Western 

 Australia by Mr. F. T. Gregory, and noticed in his paper read before the Geolo- 

 gical Society on May 22, 1861. — Edit. 



t Phil. Trans, for 1860, p. 277- 



