CXXXvi PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Aug. I906. 



The following maps, drawings, etc., were exhibited : — 



Drawings and lantern-slides, exhibited in illustration of the 

 paper by Mrs. M. M. Ogilvie Gordon, D.Sc, Ph.D., F.L.S. 



Maps and drawings, exhibited by W. R. Baldwin- Wiseman, 

 M.Sc, F.G.S., in illustration of his paper. 



Photographs illustrating the Geology of Perim Island, exhibited 

 on behalf of Surgeon T. P. Thomson. 



Geological Map of the British Islands, 1 inch = 25 miles (colour- 

 printed); and Geological Survey of England & Wales, 1-inch 

 Geological Map, n. s. Sheets 326 & 340.— Sidmouth (Drift), 

 colour-printed, by H. B. Woodward, W. A. E. ITssher, C. Reid, 

 & A. J. Jukes-Browne, 1906. Presented by the Director of H.M. 

 Geological Survey. 



Geological Map of parts of the Essequibo and Cuyuni Hi vers 

 (British Guiana), on the scale of half an inch' to the mile, by 

 J. B. Harrison & C. W. Anderson, 1905, presented by the Authors. 



