JOURNAL 
OF THE 
ROYAL MICROSCOPICAL SOCIETY. 
OCTOBER 1891. 
TRANSACTIONS OF THE SOCIETY 
IX . — The Foraminifera of the Gault of Folkestone. — X. 
By Frederick Chapman. 
( Read 21 st October , 1891.) 
Plate IX. 
Our knowledge of the Foraminifera occurring in the Gault of England 
has hitherto been derived from collections of organisms from clay- 
washings of unknown horizons. The list published in the Geological 
Survey Memoir,* though comprising many varieties, has in some 
instances the disadvantage of uncertainty regarding the precise loca- 
lity. The valuable paper of Dr. von Reuss f was based on specimens 
collected from clays of uncertain horizons. 
Finding that the facies of Foraminifera from the Upper and 
Lower Gault beds showed marked differences, it seemed desirable that 
not only should the microzoa of the Gault he worked out at some 
definite locality, hut that they should be collected at various levels 
throughout its thickness. 
The section of Gault exposed at Copt Point, Eastwear Bay, 
Folkestone, being the most favourable, and one which has received 
most attention from stratigraphists, the author has, since December 
EXPLANATION OF PLATE IX. 
Fig. 1. — Nubecularia depressa sp. n. 
„ 2. „ nodulosa sp. n. 
„ 3a, b. — Biloculina undulata sp. n. 
„ 4a, b. — Spiroluculina asperula Karrer. 
„ 5a, 6. — Miliolina venubta Karrer sp. 
„ 6. „ „ „ broad variety. 
„ 7. „ agglutinans d’Orb. sp. 
„ 8. „ Ferussacii d’Orb. sp. 
„ 9a, b. „ tricarinata d’Orb. sp. 
„ 10. — Ophthalmidium tumidulum Brady. 
„ 11a, b. — Cornuspira cretacea Reuss. 
„ 12a, b. „ involvens Reuss. 
„ 13a, b. „ foliacea Philippi sp. 
All the figures x 60. 
* W. Topley, ‘ Geology of the Weald,’ 1875, pp. 423-4. 
f “ Die Foraminiferen des norddeutschen Hils uud Gault,*’ Sitzungsb. K. Ak. 
Wiss. Wien, xlvi. pp. 5-105, pis. i.-xiii. 
1891. 2 s 
