222 
APPENDIX B : BUILDING STONE 
lameller to cleave for Flags wMcli require but little dressing — may be 
firmly jointed and are very strong and durable, and placed edgewise 
for Curbstones are not liable to split. The blocks may be easily cleft 
for area or cellar steps sills or Linterns and may be placed endways 
for pillars or large Columns. The Stone may be raised from the quarry, 
from beds 2 feet and upwards in thickness or any portable length 
and width and from its firmness this stone will suffer less damage 
from carriage than any in the London market. For Bridges Docks 
Wharf Walls and all kind of heavy works on the Thames, & for Piers 
and Harbours this stone is particularly well calculated as by the longest 
exposure to air and salt water it suffers no change. 
This stone is excellent for sound and strong Troughs or Cisterns. 
