The age, too, in which these monuments were erected was essentially the age of bronze; not only are the ornaments and furniture found in the Etruscan tombs generally of that metal, but the tombs at Mycenæ and Orchomenos were wholly lined with it. The holes into which the bronze nails were inserted still exist everywhere, and some of the nails themselves are in the British Museum. It was also the age in which Solomon furnished his temple with all those implements and ornaments in brass--properly bronze--described in the Bible,[50] and the brazen house of Priam and fifty such expressions show how common the metal was in that day. All this, however, does not prove that iron also was not known then. In the Egyptian paintings iron is generally represented as a blue metal, bronze as red, and throughout they are carefully distinguished by these colours. Now, in the tombs around the pyramids, and of an age contemporary with them, there are numerous representations of blue swords as there are of red spear-heads, and there seems no reason for doubting that iron was known to the Greeks before the war of Troy, to the Israelites before they left Egypt (1320 B.C.), or to the Etruscans when they first settled in Italy. Hesiod's assertion that brass was known before iron may or may not be true.[51] In so far as his evidence is concerned we learn from it that iron was certainly in use long before his time (800 B.C.); so long indeed that he does not pretend to know when or by whom it was invented, and the modes of manufacturing steel--ἀδάμασ--seem also to have been perfectly known in his day. In India, too, as we shall see when we come to speak of that country, the extraction of iron from its ores was known from the earliest ages, and in the third or fourth century of our era reached a degree of perfection which has hardly since been surpassed. The celebrated iron pillar at the Kutub, near Delhi, which is of that age, may probably still boast of being the largest mass of forged iron that the world yet possesses, and attests a wonderful amount of skill on the part of those who made it. When from these comparatively civilized modes of sepulture we turn to the forms employed in our own country, as described by Thurnam[52] or Bateman,[53] we are startled to find how like they are, but, at the same time, how infinitely more rude. They are either long barrows covering the remains of a race of dolicocephalic savages laid in rudely-framed cists, with implements of flint and bone and the coarsest possible pottery, but without one vestige of metal of any sort, or circular tumuli of a brachycephalic race shown to have been slightly more advanced by their remains being occasionally incinerated, and ornaments of bronze and spear-heads of that metal being also sometimes found buried in their tombs.