406 The late Sir Joseph Prestivich — 



[The following are extracts from Notebooks : — ] 



1. Thames Valley and Eastern Counties. 



Aug. 19, 1849. — With Morris through Kensington. Half-way 

 up the hill leading to the waterworks a bed of light-coloured sand 

 crops out. Mr. Earle says that is underlaid by gravel. A short 

 distance above this the ochreous gravel, which is very irregular, 

 sets in. 



[The general section of the hill is thus stated : — ] 



Mixed yellow clay and gravel. 

 Compact gravel, oclireous. 

 Light-coloured sands. 

 ? Gravel. 

 London Clay. 



At the old Kensington gravel-pits brickearth now onlj?^ is worked. 

 [The brickearth is shown in diagram to rest partly on the gravel 

 and partly on London Clay.] 



Kensington Park Villas, the old Hippodrome-ground, shows the 

 bare London Clay coming to the surface. 



At the foot of Notting Hill the valley drift shows beds of loam 

 and brickearth which are largely worked. 



South of the Kensington Road, by the side of the canal, thick 

 beds of ochreous gravel again appear. [Section given of] Bright 

 ochreous gravel of angular and rolled flints, roughly bedded, with 

 irregular sandy beds, 12 feet. Bones are said to have been found in 

 the pit. Could not by sight distinguish this gravel, which is in the 

 valley, from that on the top of the hill. 



Aug. 30, 1853.— With [R. W.] Mylne to Kensington gravel-pits. 

 It is doubtful whether the gravel caps the hill at the reservoir. 

 The brickearth goes close up to it ; the surface of the clay is also 

 mixed with gravel. In the Queen's Road the gravel is 15 to 20 feet 

 thick, and is of a brown ferruginous colour, very compact, and with 

 only a few sand-veins of the same colour. 



Resumed the following day [August 31] at the corner of the 

 Addison Road. Passing thence into Potter's Field we found a brick- 

 earth 10 to 16 feet thick, underlaid by a light quicksand, and then 

 gravel a few feet thick and full of water. This brickearth is 

 remarkable for its resemblance to the London [Clay] ; it is this 

 remanie. The outcrop of the gravel is not visible [being concealed 

 by overlap of brickearth on to London Clay]. In an old brickfield 

 at Shepherd's Bush we found some of the gravel in a heap. It 

 contained the same foreign rocks [New Red Sandstone debris] as 

 are found in the gravel at West Drayton ; differs from that in 

 Hyde Park. 



Mammalian remains have not been found in the brickearth at 

 Potter's Field, but they have been found in the gravel near 

 Shepherd's Bush. 



1853. — With Mylne to Chelsea to see the sewer now making on 

 the west of the Hospital. [The section noted was : — ] 



