the North East of Ireland. 197 



Throughout this space the cliffs present a series of highly- 

 interesting and instructive sections, which indeed leave us little to 

 desire in elucidating the structure of this important district, since 

 they traverse and expose in succession all its constituent formations 

 from the mica slate to the floetz trap. 



In endeavouring to lay before the Society a transcript from 

 these records of nature, the general principle adopted has been that 

 of a combined series of elevations, projected upon vertical planes 

 of which the direction is continually shifting so as to be always 

 parallel to the greater flexures of the coast : but, since it appeared 

 in many instances that the introduction of perspective would 

 convey a clearer idea of the phenomena to be represented, the 

 principle above laid down has often been departed from ; and the 

 delineations in their present state cannot be considered either as 

 elevations or perspective views, in any strict sense. Two principles 

 which cannot in truth be combined have certainly thus been forced 

 together, but it is hoped usefully so with reference to the infor- 

 mation to be conveyed. 



To those who consider the varying aspects assumed by the 

 same points when viewed under different angles in sailing past 

 them, it must be obvious that much of incorrectness will of 

 necessity intrude into the attempt of persons not practically ex- 

 character is applicable to the opposite side of the lough near Lame : the clialk and lias 

 continue to occupy the level of the sea through this space, but about two miles to the 

 north of Lame the chalk again sinks beneath the low basaltic cliff of Black-cave-head; 

 a ridge of the same rock extends from hence skirting the beach for three miles to 

 Ballygelly head, a promontory exhibiting rude and irregular columns ; near this point the 

 inferior strata emerge, but from the flatness of the coast being flat do not render themselves 

 distinctly visible. About three miles beyond Ballygelly-head however the red marie (No. 4 

 of the Introduction) may be traced, and about two miles further the lias begins to show 

 itself in the soutKern extremity of the Deer park hill of Glenarm : this is the point at 

 which the engraved section commences. 



