150 W. D. Lang—The Selbornian of Charmouth. 
Mr. Greenly informs me that he has lately obtained some grapto- 
lites of the ‘tuning-fork’ type a mile or two away on the strike of 
the Parys Mountain, thus indicating a much lower horizon not far 
distant. 
It is interesting to note that the copper ore of the Parys Mountain, 
like the lead and zine ores of Cardiganshire and Montgomeryshire, 
occur in beds of Llandovery age. 
My best thanks are due to Miss Elles for so kindly identifying the 
graptolites and for her remarks concerning their zonal value. 
Iit.—Tue Serzornran or Sronrparrow Crirr, CHARMOUTH. 
By W. D. Lane, M.A., F.G.S., F.Z.S., of the British Museum (Natural History). 
I. Lntroductory. 
LTHOUGH the succession of Cretaceous beds on Black Ven is 
well known and much has been written on the various members 
of the series, only cursory references haye been made to those on 
Stonebarrow Cliff on the east of Charmouth, and the lower beds have 
never been recorded therefrom. A full list of the literature on the 
geology of this district, including all that has been written on the 
Selbornian, is given in the Survey Memoir! on the “ Geology of 
Sidmouth and Lyme Regis” and another bibliography in the account 
of the last excursion to Lyme by the Geologists’ Association.? 
The only mention of the lower beds of the Selbornian (i.e. the zone 
of Hoplites interruptus) on Stonebarrow among these papers is that by 
Jukes-Browne on the Vale of Marshwood? : « Taking next a traverse 
through the southern outliers near the coast, we and the Cretaceous 
base-line in Black Ven Cliff at about 320 feet above the sea. Thence 
it rises to about 350 feet in Stone Barrow, and 400 and more on Golden 
Cap and Langdon Hill, and finally to about 500 feet on Eype Down.” 
But since, two years later,* Jukes-Browne, having described the Gault 
on Golden Cap, says, ‘‘ the next cliff exposure is in the face of Black 
Ven,” it is reasonable to suppose that he never found the base of the 
Cretaceous on Stonebarrow, and that his 350 feet is only an estimate. 
This point is mentioned because here, although it is not claimed that 
the heights given are other than approximate, the base of the 
Cretaceous is estimated only at 320 feet, a very little higher than the 
height given on Black Ven.’ ‘The reason for this low estimate will be 
given later. The exact height, however, is of small importance ; 
moreover, it is possible that the whole cliff face in the neighbourhood 
of the sections may have undergone some slipping and so haye made 
the Gault appear lower than it really is. 
It is not surprising if the Gault on Stonebarrow has not been sought 
with enthusiasm ; for the parts of the cliff where it occurs haye suffered 
1 H. B. Woodward: ‘ Geology of Sidmouth and Lyme Regis,” 1906, pp. 86-88. 
2 Proc. Geol. Assoc., vol. xix (1906), p. 340. 
3 A. J. Jukes-Browne: Proc. Dorset Nat. Hist. Club, vol. Xvili (1897), p. 176 ; 
Gxou. Mae., 1898, p. 164. 
A. J. Jukes- Browne, ‘“* Gault and Upper Greensand of England,’’ 1900, p. 185: 
Mem. Geol. Survey. 
5 W. D. Lang, ‘‘ The Zone of Hoplites interruptus at Black Ven’’: Grou. Mae., 
1904, p. 125. 
