Iron was already known to the Myceneans, for I found some knives of this metal; also some curious keys, one of which is very thick, is 5·6 inches long, has four teeth, each 1·6 inch long, and has a ring at the other end (see No. 120). But judging by the form of these knives and keys, I make bold to express the opinion that they belong to a late period in the history of Mycenæ, and that they date even from the beginning of the 5th century B.C. [Illustration: Nos. 121-125. Bronze Knives. Actual size. No. 121. (4 M.) No. 122. (3 M.) No. 123. (3½ M.) No. 124. (7 M.) No. 125. ] I also found a large number of button-like objects which seem to have served as ornaments in the house-doors or elsewhere.[190] They have a lustrous blackish colour, and according to the analysis of my esteemed friend Mr. Xavier Landerer, Professor of Chemistry at Athens, they consist of a strongly-burnt clay varnished with a lead glazing. Of bronze I discovered several well-preserved knives, one of which (No. 125) still has part of its bone handle; further, two arrow-heads of a pyramidal form without barbs (γλωχῖνες), like the Carthaginian arrow-heads, which I gathered last year in my excavations at Motyë, in Sicily. [Illustration: No. 126. Arrow-heads, hatchets, and other objects of stone. (3 M.) Actual size.] Of stone implements, I found two beautifully-polished hatchets of serpentine (see No. 126, in the lower row); further, a number of weights of diorite and a number of hand millstones of trachyte, 8 inches long and 5¼ inches broad, in the form of an egg which has been cut lengthwise. The grain was bruised between the flat sides of two of these millstones; but only a kind of groats can have been produced in this way, not flour; the bruised grain could not have been used for making bread. In Homer,[191] we find it used for porridge, and also for strewing on the roasted meat.[192] Of gold only a small particle has been found; of silver none as yet; of lead a large quantity. I also found a small and thick terra-cotta disk, with a furrow all round for suspension by a string; on one side, which is well polished, and seems to have been covered with wax, are engraved a number of 卍's, the sign which occurs so frequently in the ruins of Troy. Whorls are found here by hundreds; nearly all are of a beautiful blue stone without any ornaments (see No. 15, p. 17). Whorls of exactly the same kind were also found in the tomb at Ialysus. As yet only five whorls of terra-cotta have been found, and without any ornaments. [Illustration: No. 127. Fragment of a Lyre of Bone. (3½ M.) Size, 7:8, about.] [Illustration: Nos. 128, 129. Lower and Upper Ends of a Flute. Actual size. No. 128. (3 M.) No. 129. (6 M.) ] [Illustration: ΗΣΑΡΟΜ] [Sidenote: MUSICAL INSTRUMENTS.]