128 THE ELEMENTS 



have corrected the errors of all writers 

 who preceded them. 



Captain Laskey's Catalogue of 

 Shells found by him in North Britain, 

 in the 1st vol. of the Memoirs of the 

 Wernerian Society, with one plate con- 

 taining 17 species of very rare shells. 

 To this gentlemen the British Testa- 

 ceologist is indebted for the discovery 

 of no less than 50 new species of 

 British shells. 



Perry's Concbology, in one vol. 

 folio. This work contains about 52 

 coloured plates, well executed : but it 

 is to be regretted, he gives no refer- 

 ence to any other author. 



Parkinson's ' Organic Remains/ 

 3rd. vol. contains an account of many 

 shells found in a fossil state, with a 

 great many figures. 



