144 



Bulletin 35 



Explanation of the Plate. 

 Tertiary Fossils, Trinidad. 



Fig. 1. — Ranina cuspidata — Machipur Tamana, Trinidad. 

 Figs. 2-3. — Orbitoides dispansus — Bontour Point, Naparima, 



Trinidad. 



4-6. — Orbitoides dispansus — Marbela Manjak Mine. 



PAPER No. 20. 



ON A COLLECTION OF FOSSILS FROM SPRING VALE 

 NEAR COUVA, TRINIDAD. 

 Agr. Soc. Trin. and Tobago ; Society Paper No. 440, paged 

 separately, 1-15. Eaid before the Society, Dec. 20, 19 10. 



Page 1 



In our study of the Geology of Trinidad, we must proceed 

 step by step, but the general cultivation of elementary geology 

 would facilitate a more rapid progress. Everyone who digs a 

 quarry or makes a boring should preserve samples of the mater- 

 ials, even the least likely looking, found or passed through, and 

 submit them to those who have the means of scientific examina- 

 tion. We have now made a real and important advance in our 

 knowledge of the Tertiaries ; first, from the information gained 

 from the Manjak Mines and secondly, from the discovery of the 

 Springvale fossils. These give us the means of effecting some 

 improvement upon our previous classifications, and to speak with 

 more certainty upon some points, but we have a long way to go 

 before reaching finality, or anything like it. 



I make these remarks prefatory to a report on a collection of 

 shells found at Springvale, near Couva, in this Island. These 

 fossils have been confided to me by the Agricultural Society for 

 examination. 



The two kinds of matrix adherent to these fossils seem to 

 indicate that they come from two beds, one a ferruginous shelly 



