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If we look to Whitehaven or Lancashire, or to any of the minor coal-fields in the west of England, we can derive little hope of their being able to supply London and the southern counties with coal, after the import of coal fails from Northumberland and Durham.

In connection with the question of the contour of the land during the existence of the large lakes or inland seas, Professor Hull has prepared, in his series of maps illustrative of the Palaeo-Geography of the British Islands, a map showing on incontestible grounds the existence during the coal-ages of a great central barrier or ridge of high land stretching across from Anglesea, south of Flint, Staffordshire, and Shropshire coal-fields, to the eastern coast of Norfolk.

On his vast possessions, mainly in coal-fields, he was even more detested than the ordinary run of capitalists. The cottages and farmhouses on his estates were dilapidated and insanitary beyond what is endurable. Of his many mansions, some were kept in decent repair, because he drew many shillings from tourists admitted to view them.

They are much dreaded, for almost every year in the Bristol, Newcastle, and other coal-fields, they are the cause of fatal accidents. Each cylindrical cast of a tree, formed of solid sandstone, and increasing gradually in size towards the base, and being without branches, has its whole weight thrown downward, and receives no support from the coating of friable coal which has replaced the bark.

Political force in naval matters which is dependent upon modern ships of war is by no means "pure force" but is involved in economic force, in the advanced development of metallurgy, in the mastery of historical technique and the possession of rich coal-fields. Proof The existence of landlordism on a large scale cannot be carried on anywhere except by means of slavery.

If the twelve thousand miles of coal-fields have made Great Britain the workshop of the world, what may not be anticipated from the four hundred thousand square miles of Chinese coal-fields, which are capable of supplying the whole world, at the present rate of consumption, for thousands of years?

I cannot, however, think that botanical evidence of such a nature is sufficient to warrant a satisfactory reference of these Indian coal-fields to the same epoch as those of England or of Australia; in the first place the outlines of the fronds of ferns and their nervation are frail characters if employed alone for the determination of existing genera, and much more so of fossil fragments: in the second place recent ferns are so widely distributed, that an inspection of the majority affords little clue to the region or locality they come from: and in the third place, considering the wide difference in latitude and longitude of Yorkshire, India, and Australia, the natural conclusion is that they could not have supported a similar vegetation at the same epoch.

On the continent of Europe the coal-fields, though not occupying so large a proportion of the surface of the country as in England, are very far from being slight or to be disregarded. The extent of forest-lands still remaining in Germany and Austria are sufficing for the immediate needs of the districts where some of the best seams occur.

But although on the continent not yet occupying so prominent a position in public estimation as do coal-fields in Great Britain, those of the former have one conspicuous characteristic, viz., the great thickness of some of the individual seams. In the coal-field of Midlothian the seams of coal vary from 2 feet to 5 feet in thickness.

The strata found in the various coal-fields differ considerably amongst themselves in character. There are, however, certain well-defined characteristics which find representation in most of the principal coal-fields, whether British or European. Professor Hull classifies these carboniferous beds as follows: UPPER CARBONIFEROUS. Upper coal-measures.