i. 109;

on muscular abnormalities in man, i. 128, 129; on the greater variability of the muscles in men than in women, i. 275.

MACAWS, Mr. Buxton's observations on, i. 76; screams of, ii. 61.

MCCANN, J., on mental individuality, i. 63.

MCCLELLAND, J., on the Indian cyprinidae, ii. 17.

MACCULLOCH, Col., on an Indian village without any female children, ii. 364.

MACCULLOCH, Dr., on tertian ague in a dog, i. 13.

MACGILLIVRAY, W., on the vocal organs of birds, i. 59; on the Egyptian goose, ii. 48; on the habits of woodpeckers, ii. 63; on the habits of the snipe, ii. 64; on the white-throat, ii. 69; on the moulting of the snipes, ii. 82; on the moulting of the anatidae, ii. 85; on the finding of new mates by magpies, ii. 103; on the pairing of a blackbird and thrush, ii. 113; on pied ravens, ii. 126; on the guillemots, ii. 127; on the colours of the tits, ii. 174; on the immature plumage of birds, ii. 186 _et seqq._

_Machetes_, sexes and young of, ii. 216.

_Machetes pugnax_, numerical proportion of the sexes in, i. 306; supposed to be polygamous, i. 270; pugnacity of the male, ii. 41; double moult in, ii. 81.

MACKINTOSH, on the moral sense, i. 70.

MACLACHLAN, R., on _Apatania muliebris_ and _Boreus hyemalis_, i. 314; on the anal appendages of male insects, i. 342; on the pairing of dragon-flies, i. 347; on dragon-flies, i. 362, 363; on dimorphism in _Agrion_, i. 363; on the want of pugnacity in male dragon-flies, i. 364; on the ghost-moth in the Shetland Islands, i. 402.

MCLENNAN, Mr., on the origin of the belief in spiritual agencies,