260 PROCEEDINGS OF THE GEOLOGICAL SocIETy. [Mar. 8, 
marl, to get at the building-stone beneath, and which capping eon- 
tains the large irregular concretions of phosphate described in his 
letter; here also fossil remains are abundant, but the whole mass is 
sufficiently rich to be worth removal. The gault is seen coming out 
from beneath the beds of sandstone on the south side of this ridge, 
resting on a mass of the upper ferruginous beds of the lower green- 
sand, the latter forming a slight prominence along the road to Win- 
chester. No beds are worked for phosphate along this line of gault : 
the various spots at which Mr. Paine has obtamed this material 
belong to the upper greensand, to which part of the series he cor- 
rectly refers it. He says, ‘‘'The exact geological position of this 
stratum is the lower part of the lower chalk,” and although he has 
not worked any of the beds of the gault, he states that the analysis 
of the fossils which were thrown out in draining this retentive stratum, 
according to the report of Prof. Way, afforded from eighty to ninety 
per cent. of phosphate of lime. 
The portion of Mr. Paine’s communication to the ‘Gardener’s’ 
Chronicle’ which most surprised me, was that wherein he states that 
he had discovered a bed rich in phosphate of lime in the lower green- 
sand; and we accordingly next proceeded to view the spots at which 
it was obtained ; the first of these is in the crown of a hill or ridge 
above the village of Bracklesham, the second at rather a lower level 
across the valley of the Bourne stream. 
The first of these is worked in the mass of gault which Dr. Fitton 
represents in his section, pl. 10, on the south of the valley of the 
Wey : the phosphate nodules occur in two bands, one, and by far the 
richest, near the bottom of the mass, the other higher up, but both 
within the dark green sands which constitute the lower portion of 
the gault: the gault clays occur at the summit of the ridge. The 
valley of the Bourne stream cuts deep into the beds of lower green- 
sand; other inequalities of surface follow this in the line of section ; 
but the gault, decreasing in thickness, is found on the intervening 
summits beneath the thick capping of tertiary clays and gravels. The 
cherty sandstone which occurs so abundantly on parts of Farnham 
Common, is the remains, in stfu, of destroyed strata of firestone 
which once rested on this gault. Fossils are abundant in the beds _ 
worked above Bracklesham, and these refer them to the gault. 
The ¢rue position of the gault on the south of the river Wey is 
not given in Dr. Fitton’s section, owing to the scale of the sections, 
which horizontally are one inch, and vertically upwards of four inches. 
to the mile. The thickness of the several groups is in consequence 
greatly exaggerated ; and in this manner there is not space for these. 
undulations of the beds from beneath the tertiary strata of Beacon-hill _ 
to the river Wey. The river Wey along this part of its course runs . 
along an anticlinal valley, a disturbance which has been overlooked. 
by those who have described the accidents of the Wealden district. . 
The beds of lower greensand, which on the north side of the stream _ 
dip northwards, are found on the other side to dip south; pro- 
ceeding in this direction they gradually become more horizontal, so __ 
that where the gault beds set on above Bracklesham, the southerly 
