372 



Dr. FiTTON on the Strata below the Chalk. 



[App. C. 



Stations. 



Northamptonshire. 

 Arhury Hill, near Daventry .... 



.0. 



H 



ERTFORDSHIRE. 



Barkway Windmill : top O 



Berkhampstead, general level of the Vale... B. 



, adjacent hills, general 



level B 



Bridgewafer Monument, (gallery) B. 



Burlerj Hill, near Royston O. 



Great Chishall, (steeple) M 



HeydonHill, Chishall Down M. 



Kensworth, hill near Dunstable O. 



Lillet/ hoe, Ord. Station O. 



Rickmanswort/i, current B 



RoTjston, Ord. Station O, 



Tharfield Windmill, (Downs) O. 



Two-tvaters, Grand Junction Canal B. 



Buckinghamshire 



Aijlesbury, Grand Junction Canal C. 



, church, top of spire B. 



Great Billington, hill near church B. 



Botv Brickhill, Ordnance Station O. 



, Church battlements B, 



Brill; Redshill, north-east of the town, 



(lower than the church) O. 



Buckingham; level of Canal C 



Cheddington, church, top of tower B 



Crawley, North, church battlements B. 



Fenny Stratford, level of canal B. 



, (to Stoke Hammond lock).C, 



Miiswell Hill, Ordnance Station O, 



Newport Pagnell, (canal) C. 



, canal near, from Wol- 



verton to Woolston, by Great Linford...C 



Quainton, Ordnance Station O. 



Steivkley, ground near the church B 



Stony Stratford, canal level, from Thorn- 

 ton Park C 



Tring, (canal to Wendover, summit level) . C, 



Wendnver Hill, Ordnance Station O. 



Wingrave, Church, top of tower B, 



Oxfordshire. 



Ahington; canal, above the lock at Horse- 

 ferry C. 



Banbury, Canal, North of the town C. 



, South of the town C. 



Barnwell, canal to East Chatton C. 



, at Uffington Wharf C. 



Caversham Mill, canal C. 



Above 

 the sea 

 at Low 

 Water. 



Feet. 



804 



513 

 350 



600 



811 



342 



470? 



480? 



904 



664 



159-75 



481 



570 



275-08 



359-17 

 425 



428 

 G83 

 600 



555 



265 



429 



437 



240 



249-25 



744 



196-25 



247-75 



754 



508 



252-25 

 404-50 

 905 

 530 



177-59 

 31217 

 305-50 

 288-75 

 283-75 

 125-25 



Stations. 



Clifton Hampden, Canal, W. of Oxford ...C. 



Culham, canal south of C. 



Junction of the Thame and Isis, below 



Wittenham Wood C. 



River at Bensington Ferry C. 



River Isis, south-west of Ensham village... C 



Evenlode river, west of Oxford C, 



Heyford, upper, canal north of the village . .C. 

 south of the village. .C, 



Iffley, canal below the village C. 



Lechlade, (Gloucestershire?) C. 



Nettlebed, Windmill O. 



Old Nan's Wear, on the Isis, south of 

 Bampton C. 



Oxford, Canal Lock on the south-west of 

 the city C. 



Purley, on the Thames, below Maple Dur- 

 ham Lock C. 



Sandford, by Nuneham C. 



Shotover Hill, top O. 



River Isis, east of Stanton- Har court C. 



Streatley, (within the course of the 

 Thames across the Chalk), at the Ferry... C. 



Wallingford, canal level, by North Stoke, 

 to Moulsford C. 



Wantage, canal at C 



Middlesex. 



Cranford, junction of the Paddington and 

 Grand Junction Canals C. 



Hanger Hill O. 



King's arbour O. 



Thames river, north of Wargrave C. 



, above Great Marlow C 



, near Maidenhead C 



, at Eton C. 



, near Egham C. 



, at Laleham C. 



, at Shepperton C. 



, at Teddingtoji, above the Lock ...C. 



— , at Limehouse entrance of Re- 

 gent's Canal (high-water) C. 



Hunton Bridge C. 



London ; reservoir of the Royal Society's 

 Standard Barometer ai Somerset House, 

 above " a fixed mark" on Waterloo 

 Bridge* 



Rickmansworth, canal near to mill C. 



Mole River, opposite Hampton Court C. 



Weybridge, Basingstoke Canal C, 



St. Pancras, Regent's Canal C, 



Uxbridge, Grand Junction Canal, south of 

 the town C, 



Above 

 the sea 

 at Low 

 Water. 



Feet. 

 159-08 

 161-25 



154-25 



153-25 



205-25 



194-83 



254-83 



250 



185-69 



243-08 



820 



224-34 



190 



128-34 

 177-59 

 599 

 206-25 



138-50 



149-34 



288-75 



251 



251 



132 



108-75 

 94-17 

 79-08 

 65-59 

 52-08 

 48-17 

 40-59 

 23-75 



21 

 225-59 



83-21 

 170-17 

 28-25 

 50 

 79-59 



113-08 



* It is very desirable that the " mark " here referred to (from the Register of the Barometer, &c. published 

 periodically in the Phil. Trans.), should be connected with the standard marks on the Thames: its height 

 above the mean level of the sea, is "presumed about 95 feet." Observations of the barometer and ther- 

 mometer, are taken by one of the officers of the Royal Society twice every day ; at 9 a.m. and 3 p.m. 



