30 Dr. May cock on the Geology of Barhadoes. 



sidered as analogous; but it is a theory, I believe, rather pre- 

 valent, that these islands have been raised from the bottom of 

 the sea, by a central expansive force of volcanic origin. My 

 opinion on this subject, and the considerations on which it is 

 grounded, in reference to Barbadoes, I have already endea- 

 voured fully to explain ; vjrhat may be the arguments for or 

 against my way of thinking, presented by the other islands, I 

 am not competent to determine ; but I cannot refrain from ob- 

 serving, that a popular argument in favour of the elevation of 

 these islands by volcanic force, drawn from the occurrence of 

 volcanoes in many of them, is entirely without weight; it being 

 certainly one thing for an island, or tract of country, to contain 

 the materials capable of producing a volcano, and another, very 

 different, to have been itself elevated to its present station in the 

 globe by the force of volcanic fire. 



It would have been impossible to render the preceding ob- 

 servations intelligible without the assistance of a geological 

 map, which I have therefore endeavoured to furnishr It is in- 

 tended to illustrate the rise by successive terraces, from the 

 southern, western, and northern coast, to the highest land, 

 which runs in an irregular semicircular direction, marked by 

 the letters aa a H aaa, H pointing out the situation of Mount 

 Hillaby, the highest land of the island. It is also intended to 

 shew the deep protected hollow, occupied by Scotland, and below 

 the Cliff. The object has been to give a general idea bf the 

 relative situation and difference of character of the two dis- 

 tricts, and much pains have been taken to render the Map, in 

 this respect, minutely correct. 



Barbadoes, August 26, 1820. 



Art. III. Account of tke Remains of a Mammoth found near 

 Rochester, with some general Observations, connected with 

 the Subject. By Captain Vetch, of the Royal Engi- 

 neers, M.G.S. 



[Cummunicated by the autlior.] 

 The remains of the Mammoth, or fossil elephant, being but 



