INDEX. 



53* 



Violins, why they become mellow with 

 age, ii. 143. 



Virgil and spontaneous generation, i. 

 418. 



Virtual velocities, i. 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. 

 ^198; ii. 180. 



Voltaire s Microme&quot;pras, i. 81. 



Von Baer, i. 40, 208, 342. 



WAGNER, 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 an infant orang-outang. 

 ii.313. 



&quot;Warfare, its tendency to disappear, if, 



247. 



Waste and repair in brain, ii. 140. 

 Water unchanged in its passage through 



the animal organism, i. 410. 

 Whales and ichthvosaurians, ii. 58. 

 Whately, E.,ii. 193. 

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

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

 Winslow, Forbes, ii. 20. 

 Witchcraft, belief in, ii. 379. 

 Wollastou obtained crystals of quartz, i. 



242. 

 Worship, its object not the known but 



the unknown, ii. 420. 

 Wright, Chauncey, i. 105. 

 Wrought-iron rendered crystalline by 



vibration, i. 330. 

 Wyrouboflf on the scope of geology, i 



200. 



YOUNG, Thomas, i. 130. 



ZOOLOGY, as related to biology, i. 212, 



END. 



