Progress of the Geological Survey of Scotland. 129 



•wMcli Mr. Appacli makes of these changes in fixing the place of 

 departure from Gaul selected by the Eomans, and that of their 

 landing in Britain. Mr. Appach regards Caesar as sailing from 

 Boulogne towards Hythe, and then coasting northwards towards 

 Deal, until stopped by the tide. Turning back, he sailed again 

 along the coast into the bay which then existed west of Hythe, and 

 landed at Bennington. In his second voyage Caesar sailed again 

 from Boulogne, and drifted northwards towards the South Foreland, 

 then, as before, returned along the English coast into the " Bay 

 of Apuldore." 



The book is illustrated by a map showing the supposed coast line 

 in Eoman times, also the directions taken by the Roman fleet in 

 each voyage. We recommend the volume to all interested in the 

 coast changes and superficial deposits of our south-eastern counties. 



W. T. 



EoTAL Society of Edinburgh. — On the 15th February, a meet- 

 ing of the Eoyal Society was held in the Society's Hall, Eoyal In- 

 stitution, Dr. Christison, President of the Society, in the chair. 



Progress of the Geological Survey of Scotland. — At the request of 

 the Council, Mr. Geikie, the Director of the Geological Survey of 

 Scotland, addressed the Society upon the the progress of the Survey. 

 He began by sketching the labours of previous geologists, dwell- 

 ing more especially upon those of Boue, MaccuUoch, Maclaren, Mur- 

 chison, Nicol, etc. Passing then to the result obtained by the 

 Survey in Scotland, he said that the area which has now been 

 mapped in Scotland amounts in all to about 4,100 square miles. Of 

 this area, 2,269 square miles have been published on the one-inch 

 scale, about 800 square miles are now in the course of being en- 

 graved, and the rest is in progress. Nine sheets of the one-inch 

 map have been published, comprising the whole or parts of the 

 counties of Edinburgh, Haddington, Linlithgow, Fife, Kinross, 

 Peebles, Selkirk, Lanark, Ayr, and Kirkcudbright. In addition to 

 these maps on the scale of one inch to a mile, there are also issued 

 maps of the coal-fields on the scale of six inches to a mile. Of these 

 maps, thirty-six sheets have been published, including the coal-fields 

 of Mid-Lothian, East Lothian, Fife, and Ayrshire. A considerable 

 number more, now in the hands of the engraver, embrace the 

 northern half of the Ayrshire coal-field, with part of the great coal- 

 basin of the Clyde. 



The speaker then proceeded to give some account of the chief 

 scientific results obtained by the Geological Survey of Scotland, 

 during the four years which had elapsed since he last addressed the 

 Society upon this subject. Beginning with the oldest rocks ex- 

 amined, he showed the area of Silurian strata which had been 

 mapped, including the richly fossiliferous districts of Carrick, from 

 which a large number of fossils had been obtained. Within the last 

 few months an important discovery has been made by one of the 



VOL. VI. — NO. LVII. 9 



