[Novemprr, 1878. | 
THE 
SCIENTIFIC TRANSACTIONS 
OF THE 
ROYAL DUBLIN SOCIETY. 
VOLUME I, (NEW SERIES). 
VIl.—Part I. On the Nature and Origin of the Beds of Chert in the Upper 
Carboniferous Limestone of Ireland. By Proresson Epwarp Hout, wa, 4.2.., 
Director of the Geological Survey of Ireland. With Plate III. 
Part I. On the Chemical Composition of Chert and the Chemistry of the Process by 
which wt is formed. By Epwarp T. Harpman, was. [Read 17th December, 
1877.) 
CO Ry 
\ 
\ 
OCT 4 191] 
\ WV. ae ys 
“ona Musev 
hy NSS ay Hist) 
DUBLIN: 
PUBLISHED BY THE ROYAL DUBLIN SOCIETY. 
PRINTED BY ALEXANDER THOM, 87 & 88, ABBEY-STREET, 
PRINTER TO THE QUEEN'S MOST EXCELLENT MAJESTY, 
FOR HER MAJESTY’S STATIONERY OFFICE, 
1878, 
