324 INDEX. 



Sachs on living roots corroding rocks, 243 



Sage, leaves of, not eaten by worms, 33 



Saliva, doubtful whether any secreted by worms, 42 



Saussure, H. De, on brick-pebbles, 254 



Schmulewitsch on the digestion of cellulose, 37 



Scott, Mr. J., on worms near Calcutta, 123 



Seeds preserved in the burrows of worms, 115 



Semper on various animals swallowing sand, 102 



Senses of worms, 19 



Silchester, old Roman town, 201 



Silica, colloid, acted on by the humus acids, 242 



Sinking of the pavements at Silchester, 212 



Sites inhabited by worms, 9 



Smell, sense of, 29 



Social feelings of worms, 34 



Sorby, Mr., on the trituration of small particles of 



rock, 257 

 Starch eaten by worms, 36 

 digestion of the granules in the cells of leaves, 



41 

 St. Catherine's Hill, near Winchester, 302 

 Stones, great, undermined by worms at Leith Hill and at 



Stonehenge, 148 



small, heaped over burrows, 60 



small, in the gizzards of worms, 247 



rounded in the gizzards of worms, 249 



Stonehenge, great stones of, undermined by worms, 



154 



circular trenches near, 287 



Structure of worms, 16 



Subsidence of the pavements at Silchester, 212 



Suction, power of, 56 



Sugar eaten by worms, 36 



Summary of whole book, 305 



Surface, objects strewed on, buried under castings, 130 



