Lieut. Nelson on the Geologi/ of the Bermudas. 



107 



which commences in the centre of the north side, and continues westward, through Stock's 

 Point, till it appears, as above noticed, at Mullet Bay. 



Cooper's Island. — Here I have remarked nothing, except the supposed cast of a tree at the 

 south-east point. It will be referred to under the head of ' Organics.' 



Longbird Island — Affords an excellent horizontal section along the south side of strata, depo- 

 sited in irregular undulations, and not contorted by any subsequent disturbance. 



Nonsuch, Castle, and Goat Islands. — As far as interest depends on variety, these possess but 

 little. They, however, exhibit the frusta of the saddle-shaped structure, which may often be 

 traced from one island to another, though frequently separated by considerable intervals. 



Bermuda, or the Main Island. — The description given of the north side of St. George's answers 

 in all respects to that of the whole of those coasts which are exposed to the ocean. On the south 

 side, the sand has made several encroachments, but only at Elbow Bay, with any great success. 



This sand tract will be more minutely described under ' encroachments ;' but I may here 

 remark, that wherever the rain, in effecting its escape, has scooped channels in the slope of this 

 sand, their sides and bottom are lined with substalagmite of about one eighth of an inch thick. 

 This is not peculiar to Elbow Bay, for, generally, wherever the sandy rock has been exposed in 

 a hill side, it will be found coated with this incrustation. 



Westward of Hungry Bay, the rock assumes a somewhat uniform character. A stratum of 

 sand, corresponding to that on the south side of St. George's Island, begins to show itself at 

 about the centre of the island, continuing thence for a few miles westward ; but in both in- 

 stances there seems little difference in age between these sand beds and the strata above them, as 

 the same shell, an helix, is found in abundance at all levels. 



Fig. 3. 



Fig. 4. 



Figs. 3 and 4 are general sketches of the cliffs along this south coast, especially between Elbow 

 and Whale Bays. 



Fig. 3, a, b, ordinary rock, friable calcareous stone occasionally appearing, as under e, fig. 4, 

 with faults, where the sand stratum (c) has been washed away, and thus assisted the sea in strewing 

 these coasts with landslips and huge blocks. Fig. 3. d, Apparently a very new deposit, from 

 the looseness of Its texture, and its containing perfectly recent marine shells ; it seems to be merely 

 a covering to the regular rock lying under c. 



Somerset. — One of the prettiest islands, has but little to attract the attention of the geologist. 



p2 



