ADDITIONS AND CORRECTIONS. 
INTRODUCTION. 
Page xvi, line 27, for less, read more. 
», xxxi, 4th line, for beds below the May Hill Sandstone, read the May Hill Sandstone and the beds above it. 
» Xxxvi, line one, transpose the words strike-joints and dip-joints. 
CORRECTIONS LEFT BY PROFESSOR M‘°COY. 
Several localities in addition to those in the body of this work are given in the lists at pp. 332 to 374. 
Page 10, 9th line from bottom for Tregil, read Tregib. 
», 24, for 2nd Sub-family Chetetine, read 3rd Sub-family Cheetetine. 
» 27, last line add Calophyllum to the list of Genera. 
» 86, 22nd line, and Explanation of Pl. 3. C. for paracida, read parricida. 
3, 483, Streblopteria pulchella add, Not uncommon in the carboniferous limestone of Berwick-on-Tweed. 
Directions to Binder. 
Cancet the half-title and ‘list of Genera’ prefixed to the Ist Fasciculus, and the list of Genera 
prefixed to the 2nd Fasciculus. Place the Advertisement to Ist and “nd Fasciculus’ after the preface, and 
before the second half-title. After the Text place the Appendix, then all the plates marked 1 in alpha- 
betical order, followed by all those marked 2, also alphabetically and finally those marked 3; each Plate 
to be faced by its corresponding leaf of ‘ Explanation.’ 
