Index. 



307 



Tyndall, Prof, examination of his 

 views by Dr. Winchell, 222, 224, 

 227, 238, 241, 247. 



Typhoid fevers, origin of, 168 ; deaths 

 from in England, 170. 



Ustilaginem, 154. 



Valens' aqueduct, 5. 



Van Buren, M.,27. 



Van ReDsselaer, Stephen, 271, 272. 



Vorstellungskraft, 237, 238. 



Water Supply of Albany, a paper by 

 P. Hogan, 167-178. 



Water Supply of Constantinople, a 

 paper by H. A. Homes, 1-18. 



Watson, W.C., 206. 



Wells, polluted, 169. 



Whitney, A., 276. 



Whitney, W. D.,184. 



Winchell, Alexander, a paper en- 

 titled Thoughts on Causality, 

 211-253. 



Woodpecker and the black spruce, 

 300. 



World, knowledge of, 96; know- 

 ledge of the future, 105. 



