346 EARTHQUAKES. 



given in the account of the earthquake at Scarborough, on 

 December 29, 1737, when the head of the spa water well 

 was forced up in the air about ten yards high. At this 

 time the sands on the shore are said to have risen so slowly 

 that people came out to watch them.^ 



Two other examples of rapid earth movement are 

 taken from Professor Eossi's ' Meteorologia Endogena.' 

 Professor D. Seghetti, writing to Professor Eossi, says that 

 a few lustres ago (one lustre = twenty years) Mount S. 

 Griovanni hid the towns Jenne and Subiaco from each 

 other. From Subiaco the church at Jenne is now visible, 

 which a few years ago was invisible. The people at 

 Jenne also can see more than formerly. The supposition 

 is that the side of Mount S. Giovanni is lowered. This 

 fact corresponds to a fact stated by Professor Carina, who 

 says that forty or fifty years ago from G-ranaiola you could 

 not see either the church of S. Maria Assunta di Citron e 

 or the church of S. Pietro di Corsena. Now you can see 

 both .2 



For a remarkable example illustrating the connection 

 between seismic activity and elevation we are indebted 

 to the patient labours of Darwin, who carefully investi- 

 gated the evidences of elevation which are visible upon 

 the western coasts of South America. These evidences, 

 consisting of marks of erosion, caves, ancient beaches, 

 sand dunes, terraces of gravel, &c., were traced between 

 latitudes 45° 35' to 12° 5', a distance north and south of 

 2,075 geographical miles, and there is but little doubt 

 that they extend much farther. As deduced from 

 observations upon upraised shells alone, a summary of 

 Mr. Darwin's observations are contained in the following 

 table : — 



Phil. Trans., vol. xli. p. 805. 



Meteor -^Irgia Endogena, vol. i. pp. 186, 187. 



