i88 
Bulletin 35 
336 
PAPER No. 25. 
OBSER VA no NS ON THE GEO LOG K OE MAR TINIOUE 
WITH NOTE ON FOSSILS FROM TRINIDAD 
A ND I 'ENEZUEL A . 
Agr. Soc. Trin. and Tob. ; Society Paper No. 549. 
Read before the Society Apr. ii, 1915 and pnbli.shed in the 
“Proceedings” for Apr., 1913, vol. 13, pp. 159-163. 
Page I 
Jules Maingot, PJsqnire, of Arima, having kindh’ furnished 
me with a copy of a paper b}’ Mr. Dublancq-Laborde of Martin- 
ique on the existence of calcareous blocks in the ancient tufs of 
Mont Pelee I was by him placed in communication with that gen- 
tleman with a view to gaining same further information on the 
geology of Martinique, and especiall}- with reference to the re- 
marks of Dr. Watts made on the reading of my paper at the 
Queen’s College in January 1912— which paper was duly pub- 
lished in the Proceedings of the Societj'. Mr. Dublancq Laborde 
was kind enough to supph’ me with ample information respecting 
the calcareous blocks in question and with specimens of the rocks 
and photographs of the organic remains found in them. 
For particulars as to the mode of occurrence of these calcar- 
eous blocks I must refer to Mr. Dublancq-Laborde’ s paper pub- 
lished in the “Comtes rendus des Seances de I’Academie des Sci- 
ences” t. 154, P. 824. It is sufficient to state here that these 
calcareous blocks lend a considerable support to the theory of Dr. 
Watts. They appear in some cases to have been thrown out 
with bombs and ejectamenta discharged by Mont Pelee and other 
volcanic vents in Martinque. The}' contain fossil Foraminifera 
Page 2 
and Algse namely, Amphistegina and other Foraminifera and 
Lithothamnion. Similar Foraminifera occur in the Miocene rocks 
of Trinidad and Barbados, and the Lithothamnion is a compon- 
ent of some of those of the latter Island. It seems further that 
in some of the.se rocks eocene fossils such as Orbitoides occur, for 
