484 
lAsSEMBLY 
Sparrv ' in-erock, ... . 52 
Speciliaj ore, 316, 360, 368 
SleiiiU;, _ „ 110 
Sulphur springs, 386, 465 
Sulphuric acid springs, 449 
Sulphuretted hydrogen, 57 
Table of rocks, _ 452 
Tabular spar, 110 
Terrains de transport, 226 
Univalve shells, 205 
Upper fucoidal group, 391, 395 
Upper black shale, , ~i22 
\?i!k:y^^. 431 
Water limestones, 53, 63 
Wenlock shale, 202 
Wenlock limestone, 202 
Yellow ochre, 304 » 
^13. > Q 1^1 
^TJ 7 2 6 0.2 2 
