NOTE, 
Tue blocks for Figs. IL, I, and IV., which appear in this 
Bulletin, were kindly lent by Messrs. J. T. Burgess & Son, 
Exeter; and for the use of the other fourfblocks I am 
indebted to Messrs. Steele & Brodie, Wormit, Fife. 
J. A. 
