Page:The Formation of Vegetable Mould through the Action of Worms (1881).djvu/338

324 *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, 103
 * 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