INDEX. 327 



Sturtevant, Dr., on worms found coiled together, 35 



Subsidence of the pavements at Silchester, 214 



Suction, power of, 58 



Sugar eaten by worms, 37 



Summary of whole book, 308 



Surface, objects strewed on, buried under castings, 132 



Taste, power of, 33 



Thickness of the layer of mould annually ejected by 



worms, 171 



of the mould over the remains at Chedworth, 201 



of the mould over the remains at Silchester, 220 



of the mould over the Roman remains at 



Wroxeter, 225 

 Thyme, leaves of, not eaten by worms, 34 

 Touch, worms highly sensitive to, 29 

 Triangles of paper, 85 

 Trituration of particles of rock in the gizzards of worms, 



252 

 Tumuli, ancient, 293 

 Tylor, Mr. A., oh Denudation, 235 

 Tylor, Mr. E., on anciently ploughed land, 296 

 Typhlosolis, 19 



Utricularia, bladders of, 111 



Vibrations, worms sensitive to, 27 

 Vision, power of, in worms, 20 



Walls, ancient, at Abinger, penetrated by worms, 190 



penetrated by worms at Silchester, 211 



Washing away of castings, 275 

 Wedgwood, Mr., on the formation of mould, 3 

 Weight of earth ejected from a single burrow, 163 

 Whitaker, Mr., on Denudation, 234 



