JAEGER. 
INDEX, 
JUPITER. 
439 
Jaeger, Dr, on the difficulty of ap- 
proaching herds of wild animals, i. 
74 ; on the increase of length in 
bones, i. 116; on the deposition of 
a male Silver-pheasant on account 
of spoiled plumage, ii. 120. 
Jaguars, black, ii. 294. 
Janson, E. W,, ou the proportions of 
the sexes in Tomicus villosus , i. 314 ; 
on stridulant beetles, i. 379. 
Japan, encouragement of licentious- 
ness in, i. 134. 
Japanese, general beardlessness of 
the, ii. 321; aversion of the, to 
whiskers, ii. 349. 
Jardine, Sir W., on the Argus phea- 
sant, ii. 72, 97. 
Jarrold, Dr., on modifications of the 
skull induced by unnatural posi- 
tion, i. 147. 
Javanese, relative height of the sexes 
of, ii. 320 ; notions of female beauty, 
ii. 347. 
Jaw, influence of the muscles of the, 
upon the physiognomy of the apes, 
i. 144. 
Jaws, smaller in the same ratio with 
the extremities, i. 117 ; influence 
of food upon the size of, i. 118; 
diminution of, in man, i. 144 ; in 
man, reduced by correlation, ii. 325. 
Jay, young of the, ii. 209 ; Canada, 
young of the, ii. 209. 
Jays, new mates found by, ii. 104; 
distinguishing persons, ii. 110. 
Jeffreys, J. Gwyn, on the form of 
the shell in the sexes of the Gastero- 
poda, i. 324; on the influence of 
light upon the colours of shells, i. 
326. 
Jelly-fish, bright colours of some, 
i. 322. 
Jenner, Dr., on the voice of the rook, 
ii. 61 ; on the finding of new mates 
by magpies, ii. 103 ; on retardation 
of the generative organs in birds, 
ii, 107. . 
Jenyns, L., on the desertion of their 
young by swallows, i. 84 ; on male 
birds singing after the proper sea- 
son, ii. 107. 
Jerdon, Dr., on birds dreaming, 46 ; 
on the pugnacity of the male bul- 
bul, ii. 41 ; on the pugnacity of the 
male Ortygornis gularis , ii. 44 ; on 
the spurs of Galloperdix , ii. 46 ; on 
the habits of Lobimnellus , ii. 48; 
on the spoonbill, ii. 60; on the 
drumming of the Kalij-pheasant, ii. 
63; on Indian bustards, ii. 65 ; on 
Otis bengalensis , ii. 69; ou the ear- 
tufts of Sypheobides auritus , ii. 73; 
on the double moults of certain 
birds, ii. 82; on the moulting of 
the honey-suckers, ii. 83 ; on the 
moulting of bustards, plovers, anil 
drongos, ii. 84; on display in male 
birds, ii. 86 ; on the spring change 
of colour in some finches, ii. 86 ; 
on the diplay of the under tail- 
coverts by the male bulbul, ii. 96 ; 
on the Indian honey-buzzard, ii. 
126; on sexual differences in the 
colour of the eyes of hornbills, ii. 
129 ; on the markings of the Tra- 
gopan pheasant, ii. 134; on the ni- 
dificat.ion of the Orioles, ii. 168; 
on the nidification of the hornbills, 
ii. 169; on the Sultan yellow-tit, 
ii. 174; ou Palmornis javanicus , ii. 
180 ; on the immature plumage of 
birds, ii. 186 ct scq. ; on represen- 
tative species of birds, ii. 190; on 
the habits of Tumix, ii. 202; on 
the continued increase of beauty of 
the peacock, ii. 216; on coloration 
in the genus Palmornis , ii. 231. 
Jevons, W. S., on the migrations of 
man, i. 135. 
Jews, ancient, use of flint tools by 
the, i. 183; uniformity of, in 
various parts of the world, i. 242 ; 
numerical proportion of male and 
female births among the, i. 301 ; 
ancient, tattooing practised by, ii. 
339. 
Johnstone, Lieut., on the Indian 
elephant, i. 268. 
Jollofs, fine appearance of the, ii. 
357. 
Jones, Albert, proportion of sexes of 
Lepidoptera, reared by, i. 313. 
Juan Fernandez, humming-birds of, 
ii. 221. p 
Junonia , sexual differences of colour- 
ing in species of, i. 389. 
Jupiter, Greek statues of, ii. 350. 
