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92 outside of the roofing stones, we can only suppose that they date from a later period than that in which the stone chamber (which, as usual, contained only implements of stone) was originally constructed. This however is a circumstance which at present can scarcely be determined with sufficient certainty, and will be better left to future and closer investigation.

An examination of the most remarkable and striking cromlechs and giants' chambers, cannot fail to excite our surprise that the aboriginal inhabitants of Denmark were able to erect such stupendous monuments. How the large cap-stones were brought to lie on the supporting stones is indeed not quite incomprehensible. It might have been effected by forming steep paths or inclined planes composed of earth and stems of trees, from the upper part of the supporting stones to the surface of the surrounding field, and by forcing the stones up these paths by means of levers. It may also be added that possibly the inhabitants had been able to tame and employ the horse, which must have existed in the country from the earliest period. It is still more remarkable if, being destitute of tools of metal, they were in a situation so to split the large roofing and supporting masses of stone, that they are completely flat on the side which is turned towards the chamber. For it is highly probable that many or most of them have been artificially split. Their number is too great to allow of the supposition that they all possess the natural form, whilst it is quite evident that the small flat fragments which fill up the interstices between the supporting stones have been split by artificial means. Hence it is possible that the aborigines were acquainted with the simple method of splitting large blocks of granite, which is still practised in several countries. Holes bored in a certain direction along the veins of the stone are filled with water. Wedges are then introduced into these holes, and struck with heavy mallets till the rock is split into two flat pieces. It must of course be supposed in this case that the aborigines knew how, by means of other stones, to form these holes or