Luminosity in insects.
Lunar periods.
Lund, Dr., on skulls found in Brazilian caves.
Lungs, enlargement of, in the Quichua and Aymara Indians; a modified swim-bladder; different capacity of, in races of man.
Luschka, Prof., on the termination of the coccyx.
Luxury, expectation of life uninfluenced by.
Lycaena, sexual differences of colour in species of.
Lycaenae, colours of.
Lyell, Sir C., on the antiquity of man; on the origin of man; on the parallelism of the development of species and languages; on the extinction of languages; on the Inquisition; on the fossil remains of vertebrata; on the fertility of mulattoes.
Lynx, Canadian throat-ruff of the.