Excerpt from The Entomologist's Record and Journal of Variation, 1959, Vol. 71
Some Of the changes which have occurred have obviously been brought about by man, in cultivation, drainage, and industrialization. This is particularly so in the region dealt with in this article, and it seems that some account of man's influence on the butterfly population within this area might be of some future value.
Natural divisions or the area The region considered includes a small portion of the Pennine hills and extends eastwards as far as the River Trent. Reference to the sketch map shows that the area falls into four natural divisions.
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