Nautilus, Silurian, [307].
Nectar of plants, [92].
Nectaries, how formed, [92].
Nelumbium luteum, [387].
Nests, variation in, [211].
Neuter insects, [236].
Newman, Mr., on humble-bees, [74].
New Zealand, productions of, not perfect, [201].
——, naturalised products of, [337].
——, fossil birds of, [339].