Jäger, Dr., researches of, [742], [805], [815].

Japan, [555].

Jardine, Sir W., researches of, [752], [753].

Jarrow, [139], [144].

Jaw of Iguanodon, [693].

Jeffery, Mr., on silicification, [38].

Jelly-fishes, [280], [772].

Jet, [72].

Johnston, Dr. G., on the porifera, [219].

Juglans nux-taurinensis, [198].