PART III. 
In addition to the works of the authorities cited in preceding 
sections, the following have been utilized in the preparation of 
this (No. III.) Section dealing with the plain clay-bodied wares 
Poppelreuter and Hagen, Bonn,. Jahvb ., 114-5, — Jahrbuecher 
des Vereins von Altertumsfveunden im Rheinlande, heft 114-115, 1906, 
Die romischen Graber Kolns, by Joseph' Poppelreuter ; Ausge- 
wahlte romische Graber aus Koln, by Joseph Hagen. 
Behn, Romisclie Keramik.—Kataloge des rdm.—germanischen Central 
Museums. No. 2, Romische Keramik met Einschluss der hellenistischen 
Vorstufen , by Frederick Behn, 1910. 
Die Altertiimer unserer heidnischen Vorzeit. Articles by F. Reinecke, 
K. Schumacher, L. Lindenschmit, and Fr. Behn. 
Gibson and Simpson, Poltross-burn .—The Mile-castle on the 
Wall of Hadrian at the Poltross-burn, by J. P. Gibson and 
F. Gerald Simpson. Trans. Cumb. West. Antiq. and Arch. Society , 
vol. XI., New series, 1911. 
The Roman Era in Britain , by John Ward, 1911. 
Drexel, Faimingen .—ORL XXXV,, No. 66c Kastell Faimingen, 
VI. Tongeschirr, by F. Drexel. 
Loeschcke, Samnilung Niessen.—Beschreibung rbmischer Altertiimer 
gesammlt von Karl Anton Niessen, Britischem Consul in Koln a. Rhein, 
1911. Enfuhrung in die Abteilungen Glas—Keramik—Terrakotten, 
by Siegfried Loeschcke. 
A technical arrangement of types based on their glaze, colouring 
and shape implies a knowledge of the methods and materials of 
manufacture, together with clear definitions of form such as have 
been furnished by Dechelette, Loeschcke, Ritterling, Curie, &c., 
in their works already referred to. 
It has now been ascertained, in regard to the principal ingredients 
and methods of glazing and colouring, that, by the employment of 
the oxides of copper and lead and the black and red oxides of iron, 
