ERRATA. 



Part I. p. vi, line 6 from bottom, /or L. L. Dillwyn read L. W. Dillwyn. 

 Ixx., line 9 from top, /or o Alet read d'Alet. 



239, in description of woodcut, read b. Anthracite-schist (*), and grey 

 and purple, &c. 



243, line 10 from bottom, for c read b. 



244, line 7 from top and the following lines, read In the lower or first 



group there are six pairs of large imprints, gradually coming 

 nearer to the central line, and somewhat closer also to each 

 other, as far as c, which may have been a point of rest, and is 

 nearer to the groove than any of the others. 

 244, add to the note after central line ; the wider track would then 



indicate a relaxation, and not an increase, of effort. 

 247, line 8 from bottom, read Church Stretton ; and W. of. 

 254, line 16 from top, /or Marguise read Marquise. 

 Part II. p. 14, lines 5, 16, and 20 from bottom, /or pianzite read piauzite. 

 15, line 22 from top, ior phodadiformis read pholadiformis. 

 20, line 13 from bottom, /or Sau-alps read Sau-alp. 



Directions' to the Binder. 



The Binder is directed to place opposite page 46 the page numbered 46* ; and 

 at page 350 the loose slip relating to Prof. Naumann's paper on gneiss, &c. 



