ROMAN POTTERY FOUND IN BRITAIN. 43 
discovered by Artis beside the kilns in which they were made at 
Castor ( Durobrivce ). 
2a. The horizontal or flat-curved rim (type 60, Lceschcke), derived 
from Upper Italy, was brought to Haltern in Germania Inferior 
along with the legions during the Augustan period, and no doubt 
reached Britain in a similar way at the time of the Claudian 
invasion (a.d. 43). It is .represented in most of our museums. 
(Curie, Newstead, p. 263, Fig. 34, Nos. 1—7). From the end of 
the I. Century it was gradually expelled by a developed form of 
the same type, 2b. 
2b. The bead and roll rim' (Lceschcke, Haltern . V., p. 243, Abb. 33, 
16), which prevailed in Britain and on the Continent during the 
II. and III. Centuries, is developed from No. 2a by becoming more 
and more down-bent or hooked. (Curie, Newstead, p. 263, Fig. 34, 
Nos. 8 —15; Jacobi, Saalburg, p. 246, Fig. 63, Nos. 12, 22—26; 
Gibson & Simpson, Poltross-burn, p. 448. plate IV., Nos. 1, 2 
4—10, &c. 
2c. The knobbed rim (Gibson & Simpson, Op. cit., plate IV., No. 3; 
Jacobi, Op. cit., Fig. 63, No. 8), developed from ia by filling or 
thickening the under portion of the curve, is ascribed to the first 
period of Poltross-burn, a.d. 120 —180. 
3a. The flanged rim (ORL XIV., Pfiinz , plate VII., Nos. 2, 3, 6, 8, 
9, 15), the prevailing one in the Rhaetian castella, along with so 
many other La Tene survivals. It is stated by Drexel ( Faimingen , 
p. 97), to be derived from an early Belgic or terra nigra flanged 
bowl {Op. cit., p. 77, Abb. 5, 2), as shown by the flange of both 
becoming more and more down-bent and the preference for colour¬ 
coating displayed by both. The flanged mortaria often show on 
the outside and inside of the rim radially painted stripes in red 
pigment. 
The latter type is represented in the Museums at South Shields 
and at Corbridge. It is the latest form appearing at Faimingen, 
destroyed about a.d. 240. 
3b. The hammer-head rim (Gibson & Simpson, Poltross-burn, p. 452, 
plate V., Nos. 1—4, third period, about a.d. 270—330). Its de¬ 
velopment from type 3a is traced by Drexel, Op. cit., p. 97, through 
the form of mortarium with obliquely inclined collar twice grooved 
round the outside, which occurs at Pfiinz, plate Nil., 9, and also 
at Faimingen as above stated ;—examples with the same con¬ 
cavity, 1 in. to 1 in. wide, bordered by a nick below the inside 
