Page:Descent of Man 1875.djvu/8

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First
Edition
Vol. I.
Present
Edition.

Page

149

150

169

180

193

208. note.
209
239

245

250

256

275-6


290


301
314
315

327
338
339
345
349
350
351
354
359
366

387
397
401

412

117

Page

57

58-9

134-5

143

151

161, note.
163
188-190

195-6

199-206

209-210

224-5


235


243-4
254
255-6

264
272
273
277
280
281
282
284-5
288, note
292-3

308
315
319

324-5

326


Belt on advantages to man from his hair-

 lessness.
Disappearance of the tail in man and certain
 monkeys.
Injurious forms of selection in civilised
 nations.
Indolence of man, when free from a struggle
 for existence,
Gorilla protecting himself from rain with his
 hands.
Hermaphroditism in fish.
Rudimentary mammæ in male mammals.
Changed conditions lessen fertility and cause
 ill-health amongst savages.
Darkness of skin a protection against the
 sun.
Note by Professor Huxley on the develop-
 ment of the brain in man and apes.
Special organs of male parasitic worms for
 holding the female.
Greater variability of male than female;
 direct action of the environment in causing
 differences between the sexes.
Period of development of protuberances
 on birds' heads determines their trans-
 mission to one or both sexes.
Causes of excess of male births.
Proportion of the sexes in the bee family.
Excess of males perhaps sometimes deter-
 mined by selection.
Bright colours of lowly organised animals.
Sexual selection amongst spiders.
Cause of smallness of male spiders.
Use of phosphorescence of the glow-worm.
The humming noises of flies.
Use of bright colours to Hemiptera (bugs).
Musical apparatus of Homoptera.
Development of stridulating apparatus in
 Orthoptera.
Hermann Müller on sexual differences of
 bees.
Sounds produced by moths.
Display of beauty by butterflies.
Female butterflies, taking the more active
 part in courtship, brighter than their males.
Further cases of mimicry in butterflies and
 moths.
Cause of bright and diversified colours of
 caterpillars.