116 DOMAIN IX. ANOMALOUS. 



will appear the less surprising when we consider 

 the following description, just published by the 

 learned Dr. Kidd, professor of chemistry in the 

 University of Oxford., in his account of what he 

 calls pebble-stone*. 

 Kidd's This term is applicable to a numerous class 



account. 



of rocks, &c. consisting of pebbles of various 

 sizes and colours 5 which are irregularly con- 

 nected together, either with or without an inter- 

 mediate substance ; and it is presumed that the 

 cemented particles are pebbles, or have acquired 

 their rounded form by attrition, from their uni- 

 form smoothness. 



" One of the most striking varieties of pebble- 

 stone very commonly occurs scattered in large 

 masses over the vale of Berkshire -, it consists of 

 numerous oval pebbles, of reddish black flint, 

 very much resembling raisins when swelled by 

 boiling, cemented together by means of indu- 

 rated sand, of a brownish white colour. The 

 whole appearance of the mass has given rise to 

 the term plumb-pudding-stone, in this country ; 

 and the resemblance that gave rise to the term 

 is so remarkable, that it cannot fail to strike the 

 mind upon the first view. The term has been 

 very generally adopted by foreign mineralogists; 



* Outlines of Mineralogy, 1800,. App. p. 21. 



