460 



Index. 



w. 



Wagner, Moritz, on geographical 

 distribution, 216. 



Wallace, A. R., on origin of 

 species as coincident in time 

 and space with pre-existing and 

 allied species, 22 ; on wingless 

 insects, 70 ; on absence of hair 

 from human back, and function 

 of on arms of orang, 89 ; on 

 geographical distribution, 207, 

 231, 232, 233, 243; on natural 

 selection, 256 ; on recognition 

 marks, 271-273; on alleged de- 

 ductive consequences of the na- 

 tural selection theory, 273-276; 

 his theory of warning colours, 

 323, 324 ; on sexual selection, 

 391-400, 450; his principal 

 defect in treating of animal 

 colouration, 449, 450. 



Warning colours, 323-326. 



Wasp, imitated by a fly, 329. 



W'ater-cress, multiplication of, in 



New Zealand, 286. 

 Weevils, on St. Helena, 232. 

 Weismann, his theory of heredity, 



T i3> 134- 

 Wells, Dr., on natural selection, 



2 57- 



Wetterhan, Prof., on vegetable 

 ills, 448. 



Whales, 38, 50, 53, 54, 65, 180. 

 Whewell, on natur 

 257, 258, 443-445- 



selection, 



Wings, 54-56, 60, 61, 68-70, 355. 

 W 7 olf, Tasmanian, dentition of, 34. 

 Wood, John, on vestigial muscles 



in man, 77. 



Woodward, on fossil cirripedes,43i. 

 Woolner, on the human ear, 86. 

 Worms, embryology of, 155. 

 Wyman, Prof., on the great toe of 



human embryo, 79? 80. 



Zona pellucida, 121. 



