764 INDEX. 



Mimus polyglottus, 467. 



Mind, difference of, in man and the highest animals, 143; similarity 

 of the, in different races, 203. 



Minnow, proportion of'tlie sexes in the, 282. 



Mirror, behavior of monkeys before, 709. 



Mirrors, larks attracted by, 469. 



Mitchell, Dr , interbreeding in the Hebrides, 215. 



Mitford, selection of children in Sparta, 32. 



Mivart, St. George, on the reduction of organs, 13; on the ears of 

 the lemuroidea, 17; on variability of the muscles in lemuroidea, 46, 

 54; on the caudal vertebra? of monkeys, 65; on the classification of 

 the primates, 174; on the orang and on man, 175; on differences in 

 the lemuroidea, 176; on the crest of the male newt, 395. 



Mobius, Prof., on reasoning powers in a pike, 85. 



Mocking- thrush,, partial migration of, 467; young of the, 554. 



Modifications, unserviceable, 69. 



Moggridge, J. T., on habits of spiders, 77; on habits of ants, 168. 



Moles, numerical proportion of the sexes in, 279; battles of 

 male, 570. 



Molliene&ia petenensis, sexual difference in, 382. 



Mollusca, beautiful colors and shapes of, 298; absence of secondary 

 sexual characters in the, 296. 



Molluscoida, 181, 296. 



Monacanthus scopas and M. Peronii, 376. 



Monboddo, Lord, on music, 653. 



Mongolians, perfection of the senses in. 38. 



Monkey, protecting his keeper from a baboon, 117, 125; bonnet. 

 171; rhesus, sexual difference in color of the, 615, 629; mustache, 

 colors of the, 614. 



Monkeys, liability of, to the same diseases as man. 7; male, recog- 

 nition of women by, 9; diversity of the mental faculties in, 31; 

 breaking hard fruits with stones, 56; hands of the, 56, 57; basal 

 caudal vertebrae of, imbedded in the body, 66; revenge taken by, 78; 

 maternal affection in, 79; variability of the faculty of attention in, 

 83; American, manifestation of reason in, 87 ; using stnnes and 

 sticks, 91; imitative faculties of, 98; signal-cries of, 98; mutual 

 kindnesses of, 115; sentinels posted by, 114; human characters of, 

 171; American, direction of the hair on the arms of some, 172; grada- 

 tion of species of, 199; beards of, 607; ornamental characters of, 

 626; analogy of sexual differences of, with those of man, 636; 

 different degrees of difference in the sexes of, 640; expression of 

 emotions by, 652; generally monogamous habits of, 674; polygamous 

 habits of some, 674; naked surfaces of, 686; courtship of, 709. 



Monogamy, not primitive, 164. 



Monogenists, 200. 



Mononychus pseudacori, stridulation of, 345. 



Monotremata, 179; development of the nictitating membrane 

 in, 19; lactiferous glands of, 184; connecting mammals with reptiles, 

 188. 



Monstrocities, analogous in man and lower animals, 33; caused by 

 arrest of development, 40; correlation of, 49; transmission of, 197. 



Montagu, G., on the habits nf the black and red grouse, 248; on 

 rue pugnacity of the ruff, 409, 4iO; on the singing of birds, 418; OB 

 the double moult of tlie male pintail, 440. 



