566 Transactions of the Society. 
1885, employed himself in collecting and studying the Foraminifera 
from that locality. 
The Gault at Copt Foint has been divided into eleven zones by 
Messrs. C. E. De Ranee, F.G.S.,* and F. G. Hilton Price, F.G.S.f 
The divisions described by the latter author have been adopted in the 
present work. 
Specimens of Gault were taken from each zone, and in some cases, 
where the same zone presented lithological differences, materials from 
more than one level were obtained. Thus from zone XI., which is 
56 ft. 3 in. in thickness, specimens were taken at intervals of 
5 ft. or more. In this work of collecting the clay samples I had the 
advantage of the assistance of John Griffiths, who has collected for 
very many years from all parts of this formation. The number of 
clay samples worked out was twenty-three. 
My best thanks are due to my friend Mr. C. D. Sherborn, F.G.S., 
for his ready assistance at all times ; to Professor J. AY. Judd, F.R.S., 
for his counsel and for drawing my attention to the presence of 
borings of parasitic plants in the prisms of Inoceramus shells ; to 
Professor T. R. Jones, F.R.S., for much useful advice ; to Dr. D. H. 
Scott, for the information regarding the forms of parasitic plant- 
borings in the shells and fish remains from the Gault beds ; and to 
Mr. J. AY. Gregory, F.G.S., for the examination of many spines and 
other parts of Echinoderms. For the analyses of the various speci- 
mens of clays I am indebted to my friend Mr. S. Young. Mr. E. 
Halkyard, F.R.M.S., has kindly allowed me to examine his choice 
collection of Foraminifera from the Folkestone Gault, in which, how- 
ever, I did not notice any forms new to my own series. 
The following are the descriptions of the clays and their washings, 
given consecutively from the base to the top of the Gault. 
Zone I. specimen a. From the greensand seam, above the line 
of nodules of sulphide of iron, with rolled fossils. A very dark green 
glauconitic clay. Residuum after washing, 33 per cent, of glauconi- 
tic sand, not including the rolled fossils intermingled. Many of the 
glauconitic grains are perfectly distinct casts of Foraminifera. The 
washed material consists mainly of bright green glauconite, with a 
few grains of quartz and chalcedony ; also a small shark’s tooth. 
The microzoa are scarce. There are prisms of Inoceramus (found in 
every bed throughout the Gault from the base to within 20 feet of the 
top), and fragments of other shells ; these prisms and shell-fragments 
are tunnelled, the former in all cases, by borings of parasitic plants 
which Dr. D. H. Scott thinks may be referred to the genera Ostra- 
coblabe, Ostreobium , and Lithopythium ; J there is also a stelliform 
organism met with in the fish remains, shell fragments, and in 
Nubecularia nodulosa , which has been previously noticed by C. B. 
* C. E. De Ranee, Geol. Mag., 1868, p. 163. 
f Q.J.G.S., xxx. p. 342 ; and ‘The Gault : a Lecture,’ London, 1879. 
X MM. Bornet et Flaliault, Bull. Soc. Bot. France, xxxvi. (1889) p. 147. 
