160 REPORTS ON THE STATE OF SCIENCE.—1913. 
ENCLOSURE 2. 
RS iverpoo! o Sheffield 
0 Sirmingham 
London 
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A, B, C, D,\E are areas, some of which might be shown by double-page maps on a 
large scale (e.g. 1 : 500,000) ; a, b, c, single-page maps of holiday areas on a still 
larger scale (say 1 : 200,000). 
