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ROMAN URBAN TOPOGRAPHY in Britain and the western Empire

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formulated as east-west strips 125 feet wide <strong>and</strong> northsouth<br />

strips 200 feet wide. Compared with Orange <strong>and</strong><br />

towns like it, <strong>the</strong> plans of Silchester <strong>and</strong> Caistor seem<br />

<strong>in</strong>explicably fussy <strong>in</strong> <strong>the</strong>ir detail. Why <strong>the</strong> variations <strong>in</strong> <strong>the</strong><br />

widths of <strong>the</strong> <strong>in</strong>sulae, especially at Silchester? If it is caused<br />

by build<strong>in</strong>gs, why does <strong>the</strong> largest build<strong>in</strong>g of all at<br />

Silchester, namely <strong>the</strong> forum, not fill <strong>the</strong> full width of its<br />

400-foot-wide strip? We may come close to see<strong>in</strong>g <strong>the</strong><br />

ghost of a plausible fortress <strong>in</strong> <strong>the</strong> street plan of Silchester<br />

- but not quite. The town plan embodies north-south<br />

strips of <strong>the</strong> 300-foot width familiar <strong>in</strong> <strong>the</strong> o<strong>the</strong>r fortresses<br />

we have exam<strong>in</strong>ed. The forum would presumably share<br />

<strong>the</strong> site of <strong>the</strong> pr<strong>in</strong>cipia, <strong>the</strong> streets to <strong>the</strong> west <strong>and</strong> east<br />

be<strong>in</strong>g <strong>in</strong> orig<strong>in</strong> <strong>the</strong> via praetoria <strong>and</strong> <strong>the</strong> via decumana<br />

respectively. The pr<strong>in</strong>cipal difficulty is that <strong>the</strong> gap<br />

between <strong>the</strong> ends of <strong>the</strong>se two streets is not nearly large<br />

enough; it is less than 400 feet, whereas about 600 feet<br />

would be normal <strong>in</strong> a full-size fortress. All this is<br />

speculation; no doubt Dr Fulford’s excavations will reveal<br />

all, if <strong>the</strong>y have not done so already.<br />

F<strong>in</strong>ally, <strong>and</strong> very briefly, back to Colchester. After <strong>the</strong><br />

revolt <strong>the</strong> town was rebuilt <strong>and</strong> <strong>the</strong> pre-Boudican street<br />

system was restored. The occupied area of <strong>the</strong> colony was<br />

enlarged northwards <strong>and</strong> probably eastwards by extend<strong>in</strong>g<br />

<strong>the</strong> exist<strong>in</strong>g streets (Fig 58). The date of <strong>the</strong>se<br />

alterations is not certa<strong>in</strong> but <strong>the</strong>y were probably contemporary<br />

with <strong>the</strong> construction of <strong>the</strong> town wall dur<strong>in</strong>g <strong>the</strong><br />

first part of <strong>the</strong> 2nd century. Thus, <strong>in</strong> its f<strong>in</strong>al form, <strong>the</strong><br />

street system of Roman Colchester was a complex development<br />

<strong>and</strong> still conta<strong>in</strong>ed important elements of <strong>the</strong><br />

fortress which was set out shortly after <strong>the</strong> start of <strong>the</strong><br />

<strong>in</strong>vasion <strong>in</strong> AD 43.<br />

References<br />

85<br />

Crummy: Colchester: <strong>the</strong> mechanics of lay<strong>in</strong>g out a town

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