Charles Darwin

“ 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 —Starch— — — digestion of the granules in the cells of leaves, 41 St. ”

“ Taste, power of, 32 Thickness of the layer of mould annually ejected by worms, 169 —Thickness— — — of the mould over the remains at Chedworth, 199 —Thickness— — — of the mould over the remains at Silchester, 218 —Thickness— — — of the mould over the Roman remains at Wroxeter, 223 Thyme, leaves of, not eaten by worms, 33 Touch, worms highly sensitive to, 28 Triangles of paper, 82 Trituration of particles of rock in the gizzards of worms, 249 Tumuli, ancient, 290 Tylor, Mr. ”

“ Earth, amount of, brought to the surface by worms, 129 —Earth,— — — amount of, which flows down a given slope, 266 —Earth,— — — swallowed as food, 100 —Earth,— — — weight of, ejected from a single burrow, 160 Eisen, number of species of worms, 9 —Eisen,— — — depth of burrows, 110 Ejection of castings, 116 Embankments on hill-sides, 278, 282 Encampments, ancient, 290 Ernst, Dr., on worms at Caracas, 121 Excavation of the burrows, 98
Fabre, M., on the instincts of Sphex, 93 Farrer, Mr. ”