External Character of the Bath Lime. 



Colour white. 



Lustre o. 



Transparency p. 



Fracture, earthy. 



Hardness, rubs easily to powder. 

 It should seem that this passes out of the rocks in a fer- 

 mentative manner, oozing or frothing. The upper surface of 

 the specimen is somewhat encrusted with a stalactitical 

 substance. The inner part when examined seems partly 

 in bubbles. 



Dr. Moreton found lime in the stones of Cliftone pit in 

 Northumberland*', and Dr. Falconer at Bath. Sir John 

 Hill describes a similar substance to mine, which he has 

 seen thrown out of the quarries of Mr. Allen near Bath, and 

 calls it native lime and Gypsum Tympbacium of the antients, 

 saying that Theophrastus has left a record of a ship taking 

 fire from the heating of the gypsum among some clothes 

 that were in it, on the accidental admission of wet ; and that 

 he does not call it gypsum himself, but an earth only that 

 the people about Tymphaea, &c. called gypsum. 



* Since the above was written, Mr. John Hailstone, Woodwardian Pro- 

 fessor, of Cambridge, kindly informs me that the Calx nativa sent to 

 Dr. Woodward by Dr. Moreton has no pretensions to be a lime.- 



