1 88 Index. 



Fox, species and varieties in the, Huxley on, 1 1 

 Foxhound, if crossed with wolf, what might be expected, 72, 73 

 Fringillidse, their relations not such as unaided natural selection 

 would have produced, 130, 131 



Galapagos islands, forms of mocking-thrush in, 83 



, land tortoises in, 158 



Gallinacese, the true, how were they evolved ? 15 



Gallus Bankiva, or Ferrugineus, 69, 82 



Genealogy of the horse might under other circumstances have 



been read backwards, 129 

 Goat, supposed origin of, difficulties as to, 53 

 Gold-spangled Hamburghs (fowls) run black-red, 70 

 Gold-fish, 74 



Goura pigeon, how was it evolved ? 15 

 Grass-feeding animals, why are they not green? 145 

 Green, one of the commonest hues in bright-coloured birds, 145 

 Guinea-fowl, feral, in West Indies, probably derived from Africa, 



71 



H 



Hair, sheep in tropics grow more, 50 

 Half wild cattle, white, with red or black ears, 42 

 Hamburghs, gold-spangled (fowls), show tendency to run black- 

 red, 70 



said when sickle-tailed to be crossed with game, 7 



Hipparion, supposed evolution of the horse rests on no evidence, 



79 



History seeks for events, not laws, 100 



Hofacker on permanence of colour in the horse, 85 



Hog, once supposed to have only one origin, 35 



, the East Asiatic, now recognized as distinct, 35, 36 



Horse, the, said to be variable, fallacy of this, 21 

 , nothing known about its wild origin, 32 



