1889-90.] 209 



The Report was illustrated by large diagrams, and photo- 

 graphs taken during the excavations, and by samples of all the 

 beds mentioned, collections of fossils, and over one hundred flint 

 implements from the Gravels. 



Mr. Gray, the President of the Club, opened a very interest- 

 ing discussion upon the report, stating that he had strongly 

 advocated the necessity for this careful and systematic investi- 

 gation of the Gravels, and was delighted to have the opportunity 

 of joining in a work that had been so thorough and satisfactory, 

 although the results tended to confirm the opinions of the officers 

 of the Geological Survey and other Irish and English investi- 

 gators, rather than his own. He (the President) had maintained 

 that the worked flints were found only on the surface or at a 

 moderate depth below it, and were not found in the stratified 

 marine deposits of which the accumulation of gravel is made 

 up. He was now prepared to give up this idea, and to admit the 

 fact that the worked flints are found more or less throughout 

 the several marine deposits resting upon the Estuarine Clay, 

 and that this conclusion, taken together with the fact that 

 worked flints are dredged from the harbour near Greencastle, 

 presents phenomena that call for further elucidation. 



The discussion was continued by Rev. Canon Grainger, D.D., 

 M.R.I.A., Messrs. Joseph Wright, F.G.S., W. H. Patterson, 

 M.R.I. A., R. M. Young, B.A., F. W. Lockwood, Mann 

 Harbison, George Donaldson, S. A. Stewart, F.B.S.E., and 

 R. Lloyd Praeger, B.E., B.A. General satisfaction was ex- 

 pressed at the results of the investigation, and at the 

 thoroughness with which it had been carried out. 



