247 



■well-section at, 171 ; plants ne-w to, 



173 ; otter at, 236 ; notes on the size 



and growth of trees at, Ix. 

 "Watford district, flora of, 14; botany 



of, 17; list of plants of, to be investi- 

 gated, 22. 

 Watford Heath, Tertiary beds at, xviii, 



95, 97, 169. 

 Watson, H. C, on distribution of Im- 



patiensfidva, xxiv. 

 Watton, chalvbeate spring at, 109 ; 



height of, 148. 

 Wealden formation, 4. 

 Webb, Eev. E. H. : Fertilisation of 



Aucitba Japonica, Ix, 239. 

 Wellhead, height of , 150. 

 Welw}-n, chalybeate spring at, 110; 



rainfall at, in 1876,227. 

 Westmill, boidders at, 172. 

 ■^Tieat mildew, 232. 



Whitaker, W. : List of Works on the 

 Geology of Hertfordshire, xxy, 78. 



Whitaker, W., quoted, 93, 97-101, 

 103, 106. 



White Hill, source of Bourne near, 137. 



Wiggenhall, Watford, cuckoo in swal- 

 low's nest at, Ix, 136 ; owls at, 240. 



Wind, insti-uctions for observing, and 

 scale of velocity of, 215. 



Woodcock Hill, Tertiary beds at, 97. 



Woodhall, height of, 148. 



Woolwich and Reading series, 96, 164. 



Wormlev, height of, 146; well-section 

 at, 171. 



Wormley End, weU-section at, 171. 



Works on Geology of Hertfordshire, 

 list of, 78. 



Wj-mondley, Little, height of, 149. 



Zoology of Herts, investigation of, 1 20. 



EEEATA. 



Page lix, lines 5 and 10 from bottom, /o?- " Chittenden" read " Cheddington." 

 „ 19, line 26, for "botryodes " read " botryoides." 

 ,, 20, lines 3, 4, and 27, for " ccerulea" read " cserulea." 

 „ 22, line 13 from bottom, for " E. EomoRophlhjus" read"i?. Homceophylliis." 

 „ 63, in table, /or " Cassiobury " read " Harwood's Farm, Cassioburj'." 



