Vol. 67.] OF ANTIGUA USD OTHER WEST INDIAN ISLANDS. 699 



with the volcanic era. Once these fundamental positions are 

 established, the other formations in the West Indies will easily 

 drop into line. We are assured that the St. Barts formation is 

 Eocene and the Anguilla formation Miocene. It might be inferred 

 likewise that the Oceanic rocks of Cuba, Haiti, and Jamaica are 

 Miocene ; but I think that it will be safer to await more certain 

 evidence before making quite sure. 



To avoid misconception, I must point out that in using the 

 expression ' Nariva Series ' in this paper I refer only to the series 

 so designated north of Naparima Hill and the Naparima Anticline, 

 and not to the South Naparima ' Nariva Series,' about which I 

 am not now in a position to speak so positively. 1 I may simply 

 mention that I have found Orbitoides and Nummulina near Princes - 

 town, and therefore presume that the Eocene beds are developed in 

 that neighbourhood. 



Postscript. — I had finished writing this paper before I became 

 acquainted with that of Prof. J. B. Harrison, on ' The Coral-Eocks 

 of Barbados,' contained in vol. lxiii (1907) of this Journal. As the 

 conclusions at which I have arrived, so far as they extend, are in 

 accordance with Prof. Harrison's, I do not think it desirable to 

 alter anything that I have written. I may add, however, that bis 

 second conclusion (p. 336) shows that the word ' Oligocene ' as used 

 by writers on West Indian geology is not only unnecessary but 

 misleading — inasmuch as it is applied to the Eocene of Barbados, 

 Trinidad, and Antigua, as well as to the Bowden Beds of Jamaica, 

 the Caroni Series of Trinidad, and the Miocene of Haiti p.nd 

 elsewhere. 



VI. Note on thk Oeigin of Manjak, Petroleum, etc. 



The association of carbonaceous matter with Oceanic beds is not 

 less remarkable in Barbados than in Trinidad. In explanation of 

 that fact, I cannot do better than quote an extract from my second 

 note on the Manjak Mines, premising merely that, as in Trinidad the 

 vegetable materials came from the South American continent, so 

 in Barbados they came from the Atlantis continent ; and that the 

 presence of this carbonaceous matter, no less than the conglomerates 

 of Chalky Mount, is evidence of the former existence of that 

 continent : — 



' The origin of the carbonaceous substances occurring in Trinidad is to be 

 found in the vast quantities of vegetable matter brought down by the rivers 

 from the continent of South America. This matter, being of a slightly greater 

 specific gravity than water, is subject to the laws which govern the removal 

 and deposition of sediment or clastic material. Now, one of these laws is 

 that material of like specific gravity, and of like fineness or coarseness of grain 

 or dimensions of the component parts, is deposited together and apart from 

 dissimilar materials. Hence the vegetable matter brought down by the 

 rivers was deposited in layers, banks, or strata, becoming interstratified with 

 other sedimentary materials as the process of sedimentation and deposition 



1 See J. B. Harrison & A. J. Jukes-Browne, ' The Oceanic Deposits of 

 Trinidad ' Q. J. G. S. vol. lv (1899) p. 182. 



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