98 PROCEEDINGS OP THE GEOLOGTCAL SOCTETY. [Jan. 8, 



II. Physical Eelations of the Secondary Rocks on the East Coast of Scotland. 



1. Description of the Section through Beinn-Smeorail, Clyne Kirk, and 



Erora. 



2. Eelations of the Strata north of the typical line of section. 



3. Relations of the Strata south of the typical line of section. 



4. Summary of Observations and Conclusions as to the Eelations of the 



Palaeozoic and Mesozoic Strata of the IS'orth-east of Scotland. 



5. Confirmations of the above Conclusions concerning the Eelations of 



the Palaeozoic and Mesozoic Strata. 



III. Description of the series of Secondary Formations in the Xorth-east of 



Scotland. 



1. The Trias. 



2. The Ehaetic. 



3. The Lower Lias. 



4. The Middle Lias. 



5. The Upper Lias. 



6. The Lower Oolites. 



7. The Middle Oolites. 



8. The Lpper Oolites. 



9. The X eocomian. 



10. The Lpper Cretaceous. 



IV. Phenomena presented by the "Erecciated beds.'' 



1. Order of succession of the beds. 



2. Age of the "Erecciated beds." 



3. The Matrix of the " Erecciated beds." 



4. The included blocks of the " Erecciated beds." 



5. Oeneral conclusions as to the Conditions under which the "Erec- 



ciated beds" were deposited. 



Table I. Illustrating the Succession of the Jurassic Strata in Sutherland. 

 Table II. Comparative view of the Secondary Eocks on the East Coast of 

 Scotland. 



Gexeeal Ixteodection. 



The Highlands of Scotland have long been recognized as an unri- 

 valled field of study for tlie physical geologist ; but to the strati- 

 graphical geologist and the palaeontologist, who seek for evidence to 

 aid them in reconstructing the geograpbical features and deter- 

 mining the biological characteristics of successive geological periods, 

 they have, till of late years, been regarded as comparatively barren of 

 interest. An exception to this general statement must be made, 

 however, in favour of the Old Eed Sandstone of the district, -which 

 has yielded such admirable results to the studies of Murchison, 

 Sedgwick, Malcohnson, Hugh Miller, Agassiz, and others. 



Charles Peach's discovery in 1854 of Silurian fossils in Sutherland 

 has already borne the most important fruit, and, in the hands of 

 Murchison, Eamsay, Geikie, Harkness, and Jamieson, has afforded 

 the necessary clue for determining the age of the great Primary 

 masses of the Highlands. 



Similarly the discovery by the Duke of Argyll of Miocene vege- 

 tation in beds intercalated with the basalts of Mull has been the 

 starting-point in elucidating the history of the Tertiary period in 

 the Highlands. Professor Geikie has already laid before this Society 

 the first of a series of papers in which he proposes to treat this in- 

 teresting subject. 



The Secondary strata of the same area were, at so early a period 

 as 182G, made the object of an admirable general survey by the 

 late Sir Eoderick Murchison : but the progress of geological science 



