Page:The Formation of Vegetable Mould through the Action of Worms (1881).djvu/336

322 * Morren  on worms eating sugar, 36
 * on the disappearance of the calciferous glands during winter, 48
 * on stones in the gizzards of worms, 247, 249
 * Mould, thickness of, annually ejected by worms, 169
 * thickness of, over Roman remains at Chedworth, 199
 * nature and thickness of, over the Roman remains at Silchester, 218
 * thickness of, at Wroxeter, 223
 * formation and thickness of, over the chalk, 297
 * Mountains, worms absent from, 12
 * Müller, Fritz, on the worms in South Brazil, 121


 * Nice, castings near, 106
 * disintegrated castings near, 276
 * Night, worms leave their burrows, 14
 * Nilgiri Mountains, castings on, 126


 * Objects strewed on the surface soon buried under castings, 130
 * Obliteration of old furrows on ploughed land, 292
 * Odours, degree of sensitiveness to, by worms, 29


 * Pancreatic secretion, 37
 * not acid, 53
 * Paper, triangles of, 82
 * Path, paved, burial of, by worm-castings, 145
 * Paths inhabited by worms, 10
 * Pavement, modern, undermined by worms, 192
 * Pavements, ancient, subsidence of, at Silchester, 212
 * Peat, formation of, 239
 * Percolation of earth into the chalk, 297