HILL: GEOLOGY OF JAMAICA. 87 
From Priestman’s River to Manchioneal this formation makes a bluff 
150 feet high, located slightly back of the shore line until within one 
mile of Manchioneal, when it approaches the edge of the sea. In the 
bluffs encountered just north of Manchioneal along the coast road are 
exposures of the formation 100 feet or more thick. Careful search for 
fossils in this bluff revealed only a few undetermined casts, — a few 
mollusks, a single species of reef building coral, as determined by 
Vaughan, many specimens of a Terebratula which Charles Schuchert 
has kindly studied as elsewhere reported, and a single pteropod. 
The Manchioneal formation continues south of Manchioncal as far as 
Priestman's River at tho east end of the island, where our traverse left 
the seacoast and turned inland via Bath, reaching it again at Bowden. 
The beds may also be exposed along the intervening strip of coast 
between Priestman’s River and Bowden. 
Barrett has reported from various localities at the east end of the 
island between Port Antonio and Morant Bay, at Old Harbor, Man- 
Chioneal, and capping the hill at Bowden, a formation to which he gave 
the name of the Pteropod Marls.! His lithologie and stratigraphic de- 
Scriptions of this formation are so meagre that it is difficult to identify 
the beds to which he intended the name should be applied. Even why 
it was called Pteropod Marl is not apparent, as only three species of 
Pteropods were reported from it. Others alleged that it was composed 
largely of Foraminifera, thirteen species of which, as determined by 
T, Rupert Jones, are enumerated on page 314 of the Jamaican Reports. 
Our reconnoissance of the east end of the island was largely made to 
Study this formation, but we were unable to recognize any beds cor- 
Tesponding to it as a unit. We found marls with pteropods both at 
Manchioneal and at Bowden, each of which localities was specifically 
Mentioned by Barrett, but inasmuch as these two places represent out- 
Crops of distinct formations, the same name can hardly be applied to 
them, although there is but little doubt that they succeed cach other 
Stratigraphically. 
Marine Pliocene formations analogous to the Manchioneal beds of the 
east are but sparsely represented in the western part of the island. 
At only one locality have we seen anything analogous to it. From 
eight to nine miles southwest of Montego Bay on the coast road at and 
Near Round Hill, there are extensive beds of yellow marl, resting upon 
% foundation of the Montpelier white limestone, which occupy the 
Stratigraphic and topographic position of the Manchioneal beds of the 
1 Jamaican Reports, p. 82. 
