42 P. T. CLEVE 



large number of well preserved shells and corals. Some of the shells belong to species 

 still living in the surrounding sea and some are extinct. The extinct species. as well as 

 the corals, belong to types, in our time living in the Australian sea and the East-Indies. 

 Some of the fossils also are known from the miocene beds of Malta, Vienna, Turin and 

 Faluns. Consequently the formation is certainly of miocene date. 



The most recent formation of Jamaica consists of alluvial beds around Kingston, 

 Rio-Minho etc. 



San Domingo. The greatest part of this large island is very little known to geolo- 

 gists. Only the northern part around the river Yaqui, is known from an able descrip- 

 tion by Colonel Heneken*). The oldest formation consists of metamorphic and crystaline 

 rocks and occurs in the Cibao Mns. They are covered by unfossiliferous rocks as green- 

 stones, crystaline marble and micaceous schists, sometimes containing bituminous deposits. 

 These rocks form the cordilleras of Monte Christo. 



The younger formation begins with a red unfossiliferous sandstone, in horizontal or 

 inclined beds, sometimes about 200 meters in thickness. Above the sandstone blue and 

 green fossiliferous shales, argillaceous shales, and shingle-beds occur. They are called Nivaje 

 shale and are about 200 meters thick. They are covered by tufaceous lime-stone in beds 

 of about 100 meters in thickness. According to the paleontological researches of Duncan, 

 Sowerby and Moore the Nivaje shale belongs to the miocene formation. In the southern 

 part of San Domingo tertiary beds with large quantities of rock-salt have recently been 

 found. 



The Bahamas consist of a very large group of islands and cays, stretching from 

 N. W. to S. E. between the West-Indies and Florida, north of Cuba and S:n Domingo. 

 They are all very low and flat and probably of a very recent geological date**). They 

 seem to have a very close resemblance to the island of Anegada, previously described. 



Barbuda is a low and flat island north of Antigua. My only acquaintance with the 

 geology of this island is derived from the following short description given by Guppy***). 



*) Litterature concerning the geology of S:ii Domingo: 



1843 Th. Hatjpt. Geognostische uncl bergmännische Bemerkungen iiber S:t Domingo. Karsten und 

 Dechen. Archiv fur Mineral. Geogn. Bergbau und Hiittenkunde. Band XVII, p. 536 — 672. 



1850 Carrick Moore. On some Tertiary beds in the island of S:n Domingo from notes by T. S. He- 

 neken with remarks on the Possils. Quart. Journ. Geol. _Soc. VI p. 39. 



1853 T. S. Heneken. On some Tertiary Deposits on S:n Domingo with notes on the fossil shells by 

 J. C. Moore and on the fossil corals by L. Lonsdale. Quart. Journ. Geol. Soc. IX p. 115. 



1863 Duncan P. Mart. On the fossil Corals of the West-Indian Islands P:t I. Quart. Journ. Geol. 

 Soc. Vol. XIX p. 406. 



1864 Duncan P. Mart. On the fossil Corals of the West-Indian Islands Part II. Quart. Journ. Geol. 

 Soc. XX p. 20. 



1868 Hatch. On a saliferous Deposit in S:t Domingo. Quart. Journ. Geol. Soc. XXIV p. 335. 



1869 Ruschhaupt. On the salt-mines of S:t Domingo. Quart. Journ. Geol. Soc. Vol. XXV p. 256, 



") See Capt. R. J. Nelson. On the Geology of the Bahamas. Quart. Journ. Geol. Soc. Vol. IX p. 200 

 1853. 



"*) Guppy. On the relation of the tertiary formations of the West-Indies. Quart. Journ. Geol. Soc. Vol. XXII 

 p. 578. 1866. 



