Excerpt from The Silurian Rocks of Britain, Vol. 1: Scotland

The present publication, forming the first volume of the Mono graph of the Geological Survey on The Silurian Rocks of Great Britain and Ireland, is devoted to the Silurian formations of Scotland. It presents a detailed summary of all that 15 known up to the present time regarding these early records of the geological history of the country. While the extensive and minute observa tions of the Geological Survey necessarily fill the greater part of the book, every effort has been made in the historical introduction (chapter II.) to do full justice to the labours of other observers and to give to each writer his due place in the progress of discovery.

At intervals, during several years, Messrs. Peach and Horne, following up the researches of Professor Lapworth, which supplied a clue to unravel the stratigraphy of this region, have been engaged in a searching investigation of the Silurian Rocks of the South of Scotland. They have traversed, sometimes repeatedly, the various sections of the strata across the length and breadth of the Southern Uplands. They have mapped on the ground the successive rock zones, traced the variations of these zones from one end of the region to the other, and made voluminous notes regarding their stratigraphy, tectonic structure, palaeontology, and petrography. In the course of this work the fossils have been collected mainly by Mr. Macconochie. The large mass of material thus accumulated has been condensed 'and arranged 1n the following chapters, which, it is hoped, will form a sufficient guide to future geologists who may desire to study the country described.

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