v'm Table of the Principal Additions and 



Flint 

 Editiv/O, 



Vol. I. 



Page 

 149 



ISO 



169 



180 



193 



208. note. 

 209 



239 

 245 

 250 

 256 



275-6 



290 



301 

 314 



315 



327 

 338 

 339 

 345 

 349 

 350 

 351 



:^5i 



359 

 366 



387 



397 



401 

 412 



il7 



Present 

 Kdition. 



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 



310 



324-5 

 326 



JBelt on advantages to man from his hair- 



\ lessnesa. 



fDisappearance of the tail in man and certain 



\ monlteys. 



^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 raammie in male mammals. 

 JChanged conditions lessen fertility and cause 

 \ ill-liealth amongst savngcs. 

 (Darkness of skin a protection against the 

 \ sun. 



JNote by Piofefsor Huxl<y on the develop- 

 \ ment of tiie brain in man and apes. 

 JSpecial organs of male parasitic worms for 

 \ liolding the female. 



Greater variability of male than female; 

 direct action of the environment in causing 

 differences between the sexes. 



Period of developmi-nt of protuberances 

 on birds' htads determines tlieir ti-aus- 

 mission to one or both sexes. 



Causes of excess of male births. 



Proportion of the sexes in the bee tiimily. 

 /Excess of males perhaps sometimes deter- 

 ( mined by selection. 



Bright colours of lowly organised animals. 



Sexual selection anlong.^t spideis. 



Cause of smallness of male spiders. 



Use of phosphorescence of tlie glow-worm. 



The humming noises of flies. 



Use of bright colours to Hemiptera (bugs). 



Musical apparatus of Homoplera. 

 (Development of stridulating apparatus in 

 \ Oithoptern. 



(Hermann Miiller on sexual differences ol 

 \ bees. 



Sounds produced by moths. 



Display of beauty by butterflies. 

 (Female butterflies, taking the more activu 

 \ part in courtsliip, brighter than their males. 

 (Further cases of mimicry in butterflies and 

 \ moths, 



(Cause of bright and diversified colours of 

 ^ caterpillars. 



