245 



London Basin, section across, 11; 



physical structure of, 89. 

 London Clay, 100, 165. 

 London Colney, height of, 144, 145. 

 London to Dunstable, line of levelling 



in Herts, 145. 

 Longman, C, fish-hatching by, 182. 

 Lower Eocenes, 162. 



Malacology, notes on, 172. 



Maple blight, 234. 



Marlborough, calendar of periodical 

 natural phenomena at, 39. 



Market Street, height of, 142. 



Marriott, W. : Instructions for taking 

 Meteorological Observations, Ivi, 211. 



Medicinal waters in Herts, 109. 



Meeting to found the Society, 1875, 

 report of, ix. 



Mentha citrata in Herts, 74. 



Meteorological Observations, instruc- 

 tions for taking, 211. 



Meteorological Observations taken at 

 Cassiobury House, 132; at Holly 

 Bank, Watford, 217. 



Micklefield, Tertiary outlier at, 169. 



Microscope, description of a new field- 

 naturalist's, xl. 



Microscopic fungi, 231. 



Microscopic investigation, 122. 



Middle Eocenes, 166. 



Mimms, South, height of, 144. 



Mineral spring at "Watford, supposed, 

 63, 109. 



Miscellaneous Notes and Observations, 

 63, 108, 135, 172, 238. 



Molluscs, cultivation of, 183. 



Moneybui-y Hill, Asbridge, barrow on, 

 xxi. 



Moor Park, Eickmansworth, rainfall 

 at, in 1876, 227. 



Morris, Prof. J. : The Physical Struc- 

 ture of the London Basin considered 

 in its relation to the Geology of the 

 Neighbourhood of Watford, xxiii, 89 ; 

 remarks at field-meetings on the 

 geology of Watford, xvi, xviii. 



Much Hadham, rainfall at, in 1876, 

 227. 



Munden Park, field meeting in, xix ; 

 badger and otter in, 236, 237. 



Myosutis sylvatica in Herts, 63, 70. 



Nash Mills, conversazione at, xxxii ; 



visit to, xlii; rainfall at, in 1875, 



63, 112; in 1876, 227. 

 Natatores, or swimming birds, 57. 

 Natural History, study of, 52. 

 Neocomian, or Lower Greensand, 6 ; 



near Hitchin, Ixii. 

 Nether Wyld Farm, visit to, xxxix. 



New England, height of, 150 

 Northaw, medicinal spring at, 110; 



Chalk inlier at, 169. 

 Notes and Observations, Miscellaneous, 



63, 108, 135, 172, 238. 



Oaklands, Watford, meteorological ob- 

 servations taken at, xxxix ; rainfall 

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



Observation of periodical natui-al phe- 

 nomena, 33 ; of time of flowering 

 of plants, 43. 



Observation of insects, 50; of birds, 62. 



Observations and Notes, Miscellaneous, 

 63, 108, 135, 172, 238. 



(Enotltera biennis near Watford, xxiv. 



Ofiley, Great, height of, 150, 151. 



Oldhaven and Blackheath beds, 100, 

 164. 



Orchids found near Hitchin, Ixii. 



Ordinary Meetings, 1875, reports of, 

 xiii-xxv ; 1876, xxix-xlv ; 1877, 

 1-lxi. 



Ordnance Bench Marks, Hertfordshire, 

 141. 



Ornithology, notes on, 136, 240. 



Osborne or St. Helen's Series, 168. 



Otter and badger in Herts, 236. 



Otterspool, Aldenham, springs at, xvi, 

 xix, 127; otter at, 236. 



Our local ferns, a few words about, 83. 



Owl, notes on, 240. 



Oxhey Woods, visit to, lix. 



Pala3olithic age, 192. 



Paleolithic implements found near 



Hitchin, Ixi. 

 Papers read in 1875, list of, xxxi; in 



1876, lii. 

 Pegsden Barns, Hitchin, combe at, Ixii. 

 Pepper Hill, height of, 146. 

 Percolation of rain through the soil, 



investigation of, 122. 

 Periodical natural phenomena, observa- 

 tion of, 33. 

 Physical structure of the London Basin, 



89. 

 Pinner, field-meeting at, Iviii. 

 Pinner Hill, visit to, Iviii. 

 Pisciculture in Herts, notes on, 185. 

 Plantago Timbali in Herts, 73. 

 Plants, list of, to be observed, 36 ; new 



to Watford, 173; fertilisation of, 201. 

 Plants of which the time of flowering 



should be observed, 43. ■ 

 Plum-pudding stone, Hertfordshire, 11 9. 

 Polarisation of light, 152. 

 Poles Park, storm at, 230. 

 Fotamogeton mucronatiis in Herts, 71. 

 Potentilla argentea near Watford, 



xxiv. 



