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Internal to these are semicircular bands of white, red, black, 

 white, red, white, blue, together measuring 2J feet in breadth ; 

 these coloured arcs cease at a blue line of tesserae running the 

 whole length of the dividing wall and at right angles to them ; 

 internal to these bands is a portion of pavement 1 foot 3J inches, 

 formed of a semicircle placed on a straight line, thus assuming 

 the shape of a D. All round this runs a blue waving scroll, 

 the depression of each wave being filled with a line which takes 

 somewhat the form of a helix and terminates in the centre in a 

 leaf-like figure, alternately coloured red, white, and yellow, thus 

 forming a modification of the Vitruvian scroll : a similar but 

 not the identical pattern is figured in the 18th plate of Artis' 

 Durobrivse. At the straight part of the D shaped figure, the 

 scroll is discontinued on each side, and the interval is filled up 

 with a figure like an urn; the whole design is on a white 

 ground. More internal to a narrow blue and white line is a 

 treble guilloche 7^ inches across, on a blue ground composed 

 of five bands and four colours, viz. blue, red, drab, white, and 

 blue. Within a D shaped series of white tessera is the centre 

 of the pavement composed of a double guilloche on a blue 

 ground 3 inches across, of three colours and four bands, but 

 varying successively in three divisions. 1. Blue, red, white, 

 blue. 2. Blue, yellow, white, blue. 3. Blue, light red or 

 pink, white, blue. The course of the guilloche is singular ; 

 about 3 J feet from the straight line the whole length of which 

 is lOj feet, the guilloche passes perpendicularly across to the 

 semicircular portion thus separating the centre into three, 

 viz., a square central and two lateral triangular divisions. The 

 square division contains a head made up of yellow, red, white, 

 and dark blue cubes on a white ground ; the summit of the head is 

 directed to the south, and the chin to the north. The twining of 

 the hair is evidently in representation of the twist of serpents, 

 and the whole character of the head would lead to the inference 

 that it was the intention of the artificer to depict either Medusa 

 or one of the Gorgons. The two lateral divisions contain each 

 a figure of yellow, blue, and red colours, surrounded by a tri- 

 angular drab line ; the ground is white. There is some difliculty 



