A. E. Verrill—The Bermuda Islands; Geology. 79 
its uppermost layers. Above this sand, where the sand is present, 
in other places resting immediately upon the conglomerate, is the 
ordinary drift-rock.” 
b. Fossils of the Beach-rocks. 
As mentioned above, marine shells are often abundant in these 
rocks. Most of them are species still living about the islands, 
though of these some are now rare and much smaller than the fossils. 
In the chapter on Paleontology, I shall give a rough list of these 
fossils hitherto recognized. Unfortunately collectors have not desig- 
nated, in most cases, the exact localities where their specimens were 
EEE EZ 
EPS AA 
—— ae 
Figure 11.—Diagrammatic section west of Hungry Bay, south shore; }, b’, strata 
' of hard Walsingham limestone, containing cylindric holes, p, commonly 
called molds of ‘‘ palmetto stumps,” and overlaid by indurated red-clay ; ¢, 
Beach-rock or Devonshire formation, containing marine fossils; d, beds 
of imperfectly consolidated drift-sand, overlying c; e, later eolian lime- 
stones containing only recent land shells; s, diagrammatic section of small 
serpuline atoll, near the shore; w, w’, level of high-water and low-water 
mark. Original. 
obtained, so that they are probably of different periods. Few 
recognizable corals have occurred. The Mussa or Mycetophyllia 
obtained by Nelson is of the most interest. Near Hungry Bay, I 
found in these rocks fragments of a large barnacle (Balanus), which 
I have not seen living here. 
The best exposures that I studied were between Elbow Bay and 
Hungry Bay. These have been mentioned above (p. 72), and some 
of the exposures have been previously figured by me.* 
* Plates xvi-xx. Also these Trans., xi, p. 908, plates Ixxxiv-Ixxxvi; ‘‘ The 
Bermuda Islands,” p. 496, same plates. 
