69-4 



ME. E. J. LECHMEEE GUPPY Otf THE GEOLOGY [NOV. 191 I 



could have been derived. I append a diagram (fig. 3) showing my 

 view of the strata of the Scotland district before the removal of a 

 large part of them by denudation. 



Dr. Spencer l takes a somewhat similar view of the age of the 

 Scotland Beds, but he thinks that the material was derived from 

 the Orinoco. That river, however, was not in existence at the 

 time, and we need hardly go so far, not to speak of the difficulty 

 of transporting quantities of large and heavy pebbles across the 

 intervening space. The northern portion of South America lying 

 between the parallels of 10° and 12° lat. N., now partly submerged, 

 was nearer and was then above water. But it is more probable 

 that it was Atlantis itself that was the source of this material. 



Fig. 3. — Diagram of strata originally exposed at Challcy Mount 

 (Barbados). 



Sea-level 



a = Coral-rock. d= Grits. 



b = Oceanic Beds. e= Conglomerates. 



c=-Leda and Nucula Beds. 



[Great part of the strata represented in this figure has been removed 

 by denudation.] 



I think, therefore, that while in Antigua and elsewhere forma- 

 tions occur belonging to the sea- margins of Atlantis, we have 

 in Barbados an actual fragment of that continent itself. This 

 statement applies principally to the lower conglomerates and 

 coarse grits of the Scotland Series, which I should consider to be 

 Cretaceous. The upper part containing fossils, among others the 

 Leda and Nucula described by Forbes in Schomburgk's History, 

 may be Eocene; though I have shown (in Proc. Sci. Assoc. Trini- 

 dad, 1878, p. 170) that the Nucula is nearly allied to N. bivirgata 

 of the Gault. 



I am somewhat puzzled by the list of fossils tabulated by 

 Prof. J. W. Gregory 2 ; and I should not like to express any opinion 

 thereon, unless I knew more about them and about the beds from 

 which they came. 



1 Q. J. Q. S. vol. lviii (1902) p. 357. 



2 Ibid. vol. li (1895) p. 310. 



