Vol. 58.] | PHYSICAL DEVELOPMENT OF BARBADOS, E‘C. 361 
rolled fragments derived from the older formation. Between Three 
Houses and the ‘ Thicket,’ remnants of the mechanical limestones 
were also seen, resting unconformably upon the Scotland Sands. 
At the foot of the terrace, north of Bath, where the Antigua 
Formation has been entirely removed, is an horizontal bed of 
sand containing small rounded pebbles of the harder old calcareous 
rocks and lumps of the Oceanic Clay. This stratum is succeeded — 
by a coral-formation (fig. 2, p. 360). 
Between the sea and St. Thomas’s Church, at an elevation of 
100 feet, the same mechanical accumulations overlie the older 
limestones. Here the thickness is from 4 to 8 feet. At Bridge- 
town, a laminated layer of marl, containing rounded pebbles, is 
shown in excavations to have a thickness of 3 feet. At many 
places, the formation was seen to a height of 100 feet. Wherever 
observed, the deposit formed only a remnant of what was once a 
widespread mass over the older limestones, which themselves have 
been farther carried away where the denuding agents have removed 
the covering. Thus this newer formation bears testimony to the 
vast amount of subsequent denudation. ‘The Ragged-Point Series 
is only a repetition of similar accumulations overlying the eroded 
surfaces of the Antigua Limestone in other islands. It may be 
correlated with the Lafayette Series of the North American continent, 
provisionally placed at the close of the Pliocene Period. 
VILL. Tae Barn-Reer Series, AND MORE REcENT PHENOMENA. 
Along the eastern coast, both south and north of Bath, but here 
somewhat interrupted by an indentation, is a_limestone-cliff, 
the surface of which is a terrace about 150 feet above the sea. 
South of Bath, the cliffs lately projected so as to allow of the sea 
undermining the hard upper beds, and consequently the shore-line is 
now strewn with great blocks. About a mile north of Bath a good 
section may be seen, as in fig. 2 (p. 360). The summit of this 
terrace is level in front, but it rises slightly to 165 feet. The 
strata are substantially horizontal, in contrast with the sloping beds 
of the Antigua Limestone upon the flank of the mountain behind it. 
From two points on this terrace I collected a number of shells, 
all in the form of casts, and a quantity of corals, which last 
Dr. T. W. Vaughan kindly determined for me, as follows :— 
1. Dichocenia Stokesi, M.-Ed.& H. | 9. Diploria labyrinthiformis, Linn. 
2. Eusmilia fastigiata, Pallas. 10. Colpophyllia gyrosa, Ell. & Sol. 
3. Orbicella cavernosa, Linn. 11. Lsopora muricata, Linn., forma 
4. O. acropora, Linn. cervicornis, Lam. 
5. Stephanocenia intersepta, Esper. 12. Lsopora muricata, Linn., forma 
6. Favia sp. palmata, Lam. 
7. Lsophyllia sp. 13. Porites porites, Pallas. 
3. Platygyra viridis, Le Sueur. 14, P. (Neoporites) astreoides, Lam. 
All these are living species, without any admixture of old forms. 
They are found in a stratum not resting on any calcareous foundation, 
so that this may be considered as typical of a series of the Pleisto- 
