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I76 SLATED ROOFS [CH.

for the adjoining farm houses were obtained, and the present stone
slates are brought by railway from large quarries which specialise
in their production. The use of stone slates is being revived, but
it is anachronistic and also uneconomic, like the revival of handi-
crafts, of which the products cannot compete economically with
machine-made goods. Nearly everywhere in England the Welsh
slates are the economically sound material for roofing and this
has its significance for the Art of Architecture, if the old rule, that

 

Fig. 54. Old building at Criccieth, Carnarvonshire. The slates of the roof are
small and thick, and the walls are built of large rough blocks.

the materials most msthetically suitable for a district are those
which are obtained in that district, is economically unsound. To
that extent a rule of Art is no longer natural but exotic.

In the year I813 in Shropshire Archdeacon Plymley considered
that ‘at the present price of straw, the comparative expense of
blue slates which are gotten from the neighbouring counties of
Wales is not excessive‘.’

Mr W. G. Collingwood, writing of High Furness, says that little
slate was exported earlier than the eighteenth century, but it
was locally used for roofing long before that time. Many of the

1 General View of {he Agrz'm/lure of S/Irops/zire, p. 106.

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