320 INDEX. 



Henslow, Prof., on ledges on hill-sides, 278 

 Hoffmeister, number of species of worms, 9 



on worms hybernating in company, 34 



perception of light by worms, 20, 22 



on the enemies of worms, 62 



depth of burrows, 110 



on hybernation of worms, 114 



Hooker, Sir J., on ledges of earth on the Himalaya, 278 

 Humus acids, action of on rocks, 240, 244 



Instinct of worms, 35 

 Intelligence of worms, 35, 64 

 Intestines of worms, their contents acid, 51 

 Islands, inhabited by worms, 120 



Johnson, Dr. H., on the Roman remains at Wroxeter, 

 222-228 



on ammonia in worm-castings, 242 



Johnson, S. W., * How Crops Feed,' 242 

 Joyce, Rev. J. G., on the Roman remains at Silchester, 201 

 Julien, Mr. A. A., on the composition of peat, 238 

 on the humus acids, 240, 244 



Key, Rev. H., on the burial of cinders by worms, 146 

 King, Dr., on the formation of mould in forests in 



France, 5 



on castings near Nice, 106, 117 



on great castings on the Nilgiri Mountains 



and in Ceylon, 126 



weight of castings near Nice, 163 



on disintegrated castings on the Corniche 



road, 276, 281 



on the washing away of the castings rai the 



Nilgiri Mountains, 274 



