INDEX. 



6tt 



Molina, why they beoome mellow with 



age, ii. 143. 

 Virgil and spontaneous generation* i. 



418. 



Virtual velocities, L 36, 40. 



Visual perception not originally cog- 

 nizant of distance, ii. 108. 



Visual sensations, how compounded, ii. 

 127. 



Vision -and touch, ii. 90 ; range of, in 

 savages and civilized men, ii. 299. 



Vital Principle, i. 127, 197, 422. 



Volition, rise of, ii. 156 ; definition of, ii. 

 177 ; theory of the lawlessness of, i. 

 193 ; ii. 180. 



Voltaire's Microm^fras, i. 81. 



Von Baer, i. 40, 208, 342. 



Waoner, Moritz, his testimony in favour 

 of the derivation theory, i. 463. 



Wallace, A. R. , on natural selection, ii. 

 6 ; his brilliant theory of the action of 

 natural selection on man, ii. 318 ; his 

 experience with aa infant orang-outang, 



ti.S4ak 



Warfare, its tendency to disappear, iL 



247. 

 Waste and repair in brain, iL 140. 

 Water unchanged in its passage tbronglt 



the animal organism, i. 410. 

 Whales and ichthyosaurians, iL 63. 

 Whately, R., ii. 193. 

 Whewell, W., on final causes, ii. 384. 

 Will, freedom of, i. 54, 198; iL 173. 

 Winslow, Forbes, ii. 20. 

 Witchcraft, belief in, ii. 379. 

 Wollastou obtained crystals of quartz, L 



242. 

 Worship, its object not the known oat 



the unknown, ii. 420. 

 Wright, Chauncey, i. 105. 

 Wrought-iron rendered crystaUino bj 



vibration, i. 830. 

 Wyroubofi' on the scope of geologTi i 



200. 



YOUNQ, Thomaa, L 130. 



Zoo&rOQT, as related to biology, L ZF2. 



