These stone weights, large quantities of which are to be seen in museums, and especially in that of Saint-Germain, are, in almost every case, nothing but pebbles bored through the centre. Sometimes, however, they were round pieces of soft stone, having a hole made in the middle. Through this hole the cord was passed and fastened by a knot on the other side. By means of the floats and weights the nets were made to assume any position in the water which was wished. The large size of the meshes in the nets belonging to the polished-stone epoch proves, that in the lakes and rivers of this period the fish that were used for food were of considerable dimensions. Added to this, however, the monstrous hooks belonging to this epoch which have been found in the Seine tend to corroborate this hypothesis. Thus, then, the art of fishing had arrived in the polished-stone epoch to a very advanced stage of improvement. In plate 80 we give a representation of fishing as carried on during the polished-stone epoch. [Illustration: Fig. 80.--Fishing during the Polished-stone Epoch.] Returning to the subject of the ancient Danes, we must add, that these men, who lived on the sea-coasts, clad themselves in skins of beasts, rendered supple by the fat of the seal and marrow extracted from the bones of some of the large mammals. For dwelling-places they used tents likewise made of skins prepared in the same way. _Arts and Manufactures._--What degree of skill in this respect was attained by the men who lived during the polished-stone epoch? To give an answer to this question, we must again ransack those same kitchen-middens which have been the means of furnishing us with such accurate information as to the system of food of the man of that period. We shall also have to turn our attention to the remains found in the principal caves of this epoch. An examination of the instruments found in the kitchen-middens shows us that the flints are in general of a very imperfect type, with the exception, however, of the long splinters or knives, the workmanship of which indicates a considerable amount of skill. Fig. 81 represents a flint knife from one of the Danish deposits, delineated in the Museum of Saint-Germain; and fig. 82 a _nucleus_, that is, a piece of flint from which splinters have been taken off, which were intended to be used as knives. [Illustration: Fig. 81.--Flint Knife, from one of the Danish Beds.] [Illustration: Fig. 82.--Nucleus off which Knives are flaked.] We also give a representation of a hatchet (fig. 83) and a scraper (fig. 84), which came from the same source. [Illustration: Fig. 83.--Flint Hatchet, from one of the Danish Beds.] [Illustration: Fig. 84.--Flint Scraper, from one of the Danish Beds.]