242 



Brick earths, investigation of, 119. 



Ericket Wood, field meetings in, xix, 

 xxxviii; boulder clay of, 106. 



Britishsedimentary rocks, relative thick- 

 ness of, 3. 



Broadfield, petrifj-ing spring at, 111. 



Broadwater, height of, 148. 



Broiiius arvensis in Herts, 73. 



Broxbourne, height of, 146 ; well- 

 section at, 171. 



Broxbourne to Hoddesdon, line of 

 levelling, 146. 



Buckland, F., quoted, 179, 181. 



Buntiugford, boulders near, 172; rain- 

 fall at, in 1876, 227. 



Bushey, Tertiary beds at, xviii, 12, 

 94, 97, 100, 105, 125, 169; London 

 Clay fossils found at, 170 ; well-sec- 

 tions at, 171 ; Colias.Edusa at, 239. 



Bushey Grove, swallow-holes at, 128. 



Bushey Station, rainfall at, in 1876, 

 227. 



Cam botanical district, 67. 



Cambridge, calendar of periodical 

 natural phenomena at, 39. 



Campanula latifolia, re-discovery of, in 

 Herts, xliv, "187. 



Calendar of periodical natural pheno- 

 mena recommended for observation, 

 39. 



Carduus tenuiflorus in Herts, 74. 



Cassiobury House, visit to, Ixiii ; rain- 

 fall at, in 1875, 112 ; in 1876, 227 ; 

 meteorological observations taken at, 

 132. 



Cassiobury Park, field meeting in, 

 Ixiii; beeches of, 8 ; badgers in, 237- 



Caterham valley, river Bourne in, 138, 

 140. 



Chalk formation, 7 ; fossils of, 13. 



Chalk marl near Hitchin, Ixii. 



Chalk, origin of, 8, 115. 



Chalk-pit in Berry Wood, xvi ; near 

 lUishey Station, xviii ; in Hatfield 

 I'ark, xxxviii ; on Bough Down, 

 Boxraoor, xli ; at Hitchin, Ixi. 



Chalk-rock, xli, 13 ; investigation of, 

 117. 



Challenger Expedition, 9, 115. 



Chalybeate spring, supposed, at Wat- 

 ford, 109. 



CHATEn,E. M. : On Microscopic Fungi, 

 Ivii, 231. 



Chauncy quoted, 135, 175, 184. 



C!licddington, coprolite pits near, lix. 



Cheshunt, height of, 145, 146 ; well- 

 sections at, 171. 



Chipping Barnet, mineral spring at, 

 111; heiglitof, 144, 145. 



Chloritic ni:irl nr;ir llitcliin, Ixii. 



Chxrocampa Nerii at Hemel Hemp- 

 stead, 174. 



Chorley Wood, Tertiary beds at, 97 ; 

 well-section at, 171. 



Clays, origin of, 10, 116. 



Clouds, instructions for observing, 215. 



Clutterbuck, llev. J. C. : The Geo- 

 logy and Water-supply of the Neigh- 

 bourhood of Watford, xxxvi, 125. 



Clutterbvck, E,. : The Coprolite 

 Beds at llinxworth, lix, 238. 



Coffleys, medicinal spring at, 110. 



Colias Ediisa, appearance of, 239. 



Colne, Anacharis Ahijiastnun in, 173 ; 

 notes and queries on, 175 ; origin of 

 the word, 1, 175. 



Colne botanical distiict, 67. 



Colne Valley Waterworks, visit to, 

 xviii; effects of pumping at, 130; 

 section at, 135. 



Colney Butts gravel pits, xix. 



Conchology of Berry Wood, x\'ii. 



Conochilus volvox, Ivii, Iviii. 



Coprolite beds, 7 ; at Hinxworth, 238. 



Cossus lig)iipe)-da, destruction of oak 

 tree by, 64, 135. 



CoTTAM, A. : Botanical Geography of 

 Hertfordshire, xv ; Notes on the 

 Flora of the Watford District, xv, 

 14 ; Notes on the Observation of 

 Insects in connexion with Investiga- 

 tions on Seasonal Phenomena, xvii, 

 50; Appearance of <S/j// /war Convo/vuli, 

 xxiii, 108; Microscopical Mounting, 

 xxxiv ; Appeai'ance of Colias Edusa, 

 Ix, 239. 



Council elected 1 1th February, 1875, 

 xi; 10th February, 1876, xxx; 9th 

 February, 1877, li. 



Cowroast, Tring, rainfall at, in 1876, 

 227. 



Cretaceous rocks of England, 1 ; ex- 

 tension of, in England, 5. 



Ckoft, Lieut. R. B. : Advantage of 

 observing Phonological Phenomena, 

 xxxix ; The Ermine Street traced by 

 its Vegetation, xl, 135 ; New Field- 

 Natui'alist's Microscope, xl ; Notes 

 on a Remarkable Storm in Herts, 

 April 4th, 1877, Ivi, 230. 



Cuckoo, notes on, 136. 



Cyclostoma elegans in North Herts, 172. 



Darwin, C, on scarcity of holly-berries, 

 189 ; experiments on the fertilisation 

 of plants, 201. 



Death's head moth at Watford, 64. 



Jtenlaria bidbifira at Red Heath, xviii. 



De Uanoe, C.E., quoted, 106. 



Destruction of oak tree by larvtr of 

 goat-moth, (M. 



