410 



IXDEX. 



llrMPnttEYS, II. N., on the habits of the 

 Stiekle-baek, I. 262, ii. 2. 



Hunger, instinct of, i. 80. 



Huns, ancient, flattening of the nose by 

 the, ii. S'-T). 



IluNTER, J., on the nnnilier of species of 

 man, 1. 21 S; on secoiulary sexual cliarac- 

 ter.s, I. 24.') ; on the trcncVal beliavior of 

 female aniiiialB during courtship, i. 2(>4; 

 on the nnisclcs of tlio L'u-vn.v m son^'- 

 biixls, ii. i>i ; on the curled trontiil hair of 

 the Hull. ii. 2(i9 ; on tlie rejection of an 

 a.ss by a female zebra, ii. 2>>1. 



IlrNTEit, W. W., on tlie recent rapid in- 

 crease of the SantalL, i. 12S; on the San- 

 tali, i. 282. 



IIussEY, Mr., on a partridge di.<itingwisliing 

 persons, ii. 1(1.5. 



llrTiiiiNsox, Colonel, example of reason- 

 ing in a retriever, 1. 46. 



IlrrroN, C"a]>t.aln, on the male wild-goat 

 falling on liis horns, ii. 2:?S. 



ncxLEY, T. II., on the structural asi'ee- 

 inent of man with the apes, i. 3; ou the 

 agreement of the brain in man with that 

 of lower animals, i. 10; on the adult aie 

 of the Orang. 1. 13; on the embryonic de- 

 vilopnii'Mt of man, i. 14; on the oriu-in 

 of num. i. 4. IT ; on variation in the slculls 

 of the natives of A\istraliii, i. 104; on the 

 at)ductor of the tilth metatarsal in apes, 

 i. 123; on the position of man, i. 1S3; on 

 the sub-orders of iiriiiiates, i. 1ST; on the 

 LeniuridiC, i. 104; on the Dinosauaria, i. 

 lOli; on tlie amphibian alliiiities of the 

 Ichthyosaurians. i. I'Jij; on variability of 

 the sliull in certain races of man, i. 21S; 

 on the races of man, i. 210. 



IIvnuiD birds, production of, ii. 109. 



llYDROPiioniA communicable 'between man 

 and the lower animals, i. 11. 



J/i/(l roporus, dimorphism of females of, 

 i. 3.3.3. 



Ifi/ehtphvx porcintiB, ii. 2S9. 



Jfi/grogon iix. ii. 20. 



Ill/hi. sin^'iiiir species of. ii. 25. 



Ili/lohaiex. maternal atfection in a, i. 89; 

 absence of the thumb in, i. 13."); upriirht 

 progression of some species of, i. 13T; 

 direction of the hair on the arms of spe- 

 cies of, i. Is"); females of, less hairy be- 

 low than males, ii. .30.'). 



JTi/IoIxiUm (i(iilitt. j. 135; hair on the arms 

 of, i. Is5; musical voice of the, ii. 2(>4; 

 superciliary ridge of; ii. 803 ; voice of, ii. 

 81G. 



IIylubatei> Jwolock, se.xual difference of 

 color iu, ii. 2T7. 



Hylobates lar, i. 135 ; hair on the arms of, 

 i. 185. 



Ifi/lohiitc.i Iciicixrii.i. i. IS,'). 



liijUihiilix Kiiiiilacti/lHH, i. 135; laryngeal 

 sac of. ii. 2tV!. 



llYMENOPTEn.v i. .35.3; large size of the cer- 

 ebral ganglia in, i. 139 ; classification of, 

 1. 181 ; sexual dillerenccs in the wings of, 

 i. 835 ; aculeate, relative size of the sexes 

 of, i. 837. 



IIvMENOPTEEON, parafiitic, with a scden- 



tai-y male, 1. 264. 

 Ifi/omoKchim aqitaticw), 11. 289. 

 lli/perythra, proportion of the sexes in, 1. 



301. 

 Ifypogi/mna ilispar, sexual differenco of 



color in, i. 3?0. 

 I/ypopyrd. coloration of, i. 854. 



I, 



Ibex, male, falling on his horns, il. 233; 



beard of the, ii. 269. 

 Ibis, scarlet, young of the, Ii. 199; white, 



change of color of naked skin in, during 



tlie breeding-season, ii. TO. 

 IbiH tantalim, age of mature plumage in, ii. 



204; breeding In immature plumage, ii. 



20.5, 206. 

 Ibise-s, decomposed feathers in, ii. 71 ; 



white, ii. 21 S, and black, ii. 220. 

 IriixEU.MOXiDjj, dillerence of the sexes In, 



i. 3.M. 



IrnTIIYOPTERYGH, 120. 

 ICIITIIYOSAURIAN.S, ii. 190. 



Ideas, general, i. 60. 



Idiots, microcephalous, imitative faculties 

 of, i. 55; microcephalous, tlieir characters 

 and habits, i. 116. 



/tjitand iiiliereu/ata, ii. 31. 



Iguanas, ii. 30. 



Illegitimate .and legitimate children, pro- 

 portion of the sexes in. i. 292. 



Imagination, existence ot; in animals, i. 44. 



Imitation, i. 3S; of niiin by monkeys, i. 

 42; tendency to, in monkeys, microce- 

 phalous idiots and savages, i. 55; In- 

 fluence oC i. 155. 



Immature plum.age of birds, ii. 175, 179. 



Implacentata, i. 194. 



Lmplements, employed by monkeys, i. 49 ; 

 fashioning of. ](eculiar to man, i. 51. 



Lmpregnation, period of; influence of, up- 

 on sex. i. 293. 



Lmprovement. progressive, man alone sup- 

 posed to be capable of, i. 48. 



Incisor teeth, knocked out or filed by 

 some savages, ii. 324. 



Increase, rate of, i. 126; necessity of 

 checks in, i. 1.30. 



Indecency, hatred of; a modem virtue, i. 

 92. 



India, difficultj' of distinguishing the na- 

 tive races of,"i. 20T; C'yprinidw of, ii. IT; 

 color of the beard in riices of men of, ii. 

 304. 



Indian. Xorth American, honored for scalp- 

 ing a man of another tribe, i. 90. 



Individuality, i. 00. 



Individuation, i. 810. 



Jiitlopicus ciirlotta, colons of the sexes ofj 

 ii. 16T. 



IsKANTiriDE, prev.ilence of. i.90, 129; sup- 

 posed cause of, ii. 328; prevalenca and 

 causes oi; ii. 847, et seq. 



Inferiority, supposed physical, of man, 1 

 150. 



