Stv Oi^ 



INDEX. 



A. 



Abies excelsa and pectinata, witches' 



brooms on, 76, 77. 

 Additions to the Library in 1905, xvi ; 



in 1906, xli. 

 Address, Anniversary, 1906, 15 ; 1907, 



173. 

 Albino moles in Herts, 14. 

 Albury, earthquake of May 25, 1551, 



felt at, 144 ; earthquake of Nov. i, 



•755' perceived near, 148. 

 Aldbury, Tring, visited, xxvii, Ivii ; 



Lepidoptera of, 6, '201. 

 Aldenham, rainfall at, in 1905, 40; 



in 1906, 230. 

 Alluvial deposits at Watford, Ostra- 



coda and Mollusca from, 79. 

 Anas boscas nesting early, 213. 

 Andrews, R. T., on Herts birds, 55, 58. 

 Anniversary Meeting, 1906, xi ; 1907, 



xxxvii ; Address, 1906, 15; 1907, 



173. 

 Anson, Rev. H. R. and Miss, entertain 



the Society at Sandridge, Ivi. 

 Apsley Mills, rainfall at, in 1905, 40 ; 



in 1906, 230. 

 Arnold, M., on a white sparrow at 



King's Langley, 211. 

 Ashridge chapel and gardens visited, Ivi. 

 Athene noctiia living in Herts, 212. 

 Atomic theory, 18, 176. 

 Aubrey Camp, Redbourn, visited, lix. 

 Austin's map of Herts, 1897, 131; 



1898,132; 1899,132; 1900,133. 

 Autumn of 1905, 42, 87 ; of 1906, 224, 



246. 

 AvEBURY, Lord (quoted), on river- 

 systems, 2, 3. 

 Ayot Green bricktields visited, xxviii. 



B. 



Bacon's maps of Herts, 1876 (c), 109 ; 

 1878 (?), Ill; 1884(c), 116; 1885(c), 

 120; 1891, 126; 1895, 129; 1896(c), 

 130 ; 1897, 131 ; 1899, 132. 



Balance-sheet for 1905, xv ; for 1906, 

 xl, 



Baldock, rainfall at, in 1905, 40 ; in 

 1906, 230. 



Barley, rainfall at, in 1905, 40 ; in 

 1906, 230. 



Barnet, High, rainfall at, in 1905, 

 40 ; in 1906, 230 ; earthquake of 

 March 15, 1905, felt at, 152. 



Barnet, New, climatological observa- 

 tions at, in 1905, 38 ; in 1906, 228. 



Barraud, p. J., on Herts Lepidoptera, 

 6, 8, 199, 200 ; on Herts birds, 209, 

 212. 



Barral'd, p. J., and A. E. Gibbs: 

 A Preliminary List of Hertfordshire 

 Diptera, xliii, 249-276. 



Bayfordbury, Hertford, rainfall at, in 



1905, 40 ; in 1906, 230. 

 Bedfordshire, mean rainfall in, in 1905, 



44 ; in 1906, 233. 



Beech Bottom, St. Albans, visited, liv. 



Bennington, meteorological observations 

 at, in 1905, 36 ; in 1906, 233 ; earth- 

 quake of May 25, 1551, felt at, 144. 



Berkhamsted visited, xxxiii, Ivi ; 

 meteorological observations at, in 

 1905,37; in 1906,227; pheuological 

 observations at, in 1905, 84 ; in 



1906, 244 ; earthquake of Oct. 6, 

 1863, felt at, 150. 



Berkhamsted Castle visited, xxxiii ; 

 notes on, 195. 



Bettesworth's map of Herts, 1897, 131. 



Betiila alba and verrucosa, witches' 

 brooms on, 72. 



BicKERTON, "W. : Notes on Birds ob- 

 served in Hertfordshire during the 

 year 1905, xi, 49-64 ; . . . during 

 the year 1906, xliii, 205-220 ; Among 

 the Birds with a Camera in West 

 Herts and West Cumberland (title 

 only), xxxvi. 



Birch, witches' brooms on, 72. 



Bird, Rev. M. C. H., on the reed- 

 pheasant, 53. 



Birds observed in Herts in 1905, 49, 

 63, 85 ; in 1906, 205, 218, 245. 



Bishop's Stortford, earthquake of 

 Nov. I, 1755, perceived near, 149. 



Bittern, a fight with, 213. 



Black grouse new to Herts, 205. 



Black's map of Herts, 1892, 127. 



Boulder-clay at Ayot Green, xxviii ; 

 near Woodhall Lodge Farm, xxx. 



YOL. XIII. — PART IV. 



22 



