Index. 



241 



Weathering of rocks, 89. 

 Web-spinning, 12. 

 White butterfly, The small, 44. 

 White-throat, The, 125, 127, 181, 



230: number of insects eaten by, 



134. 

 Wild cherry, 7 ; -duck, The, 186, 196 ; 



mignonette, 124 ; -rabbit, 141. 

 Willows, 203 ; catkins of, 208 ; varia- 

 tion of, 208. 



Winter bird migrants, 185. 

 Witchcraft and toads, 224. 

 Woodcock, The, 186 ; Leopard moth, 



229 ; sage, 124. 

 Woolly rhinoceros (fossil), The, 190. 



Work done byMedway, 119, 120; by 



Thames, 193. 

 Worker ants, 156 ; bees, 130, 131 ; 



bee partially recovering egg-laying 



power, 130. 

 Wren, The, 50; nest of the gold- 



crested, The, 54. 



Y. 



Yellow-flag, The, 197, 198; -ham- 

 mer, The, 181. 

 Yew tree, 54, J24, 138. 



Z. 



Zeuzera pyrina, 229. 



