arked
bead down the mid rib ("Bronze Implements," fig. 331); but in most
cases the mid rib is quite plain with a rounded curve in section.

ANALYSES

Analyses of the halberd blades show that the metal of which they are
composed does not differ much from that of the copper celts. A recent
analysis of five specimens is appended which shows that the blades are
practically of pure copper. This is interesting, as it removes the
doubt expressed by Sir John Evans in "Bronze Implements," p. 265, that
"many of these blades have the appearance of being made of copper; but
the absence of tin in their composition has not been proved."

+-+----------+-------+----+---------+--------+-----+-------+-----+-------+
| | | | | | | | | |Bismuth|
| | |Copper.|Tin.|Antimony.|Arsenic.|Lead.|Silver.|Iron.| Nickel|
| | | | | | | | | | Zinc.|
+-+----------+-------+----+---------+--------+-----+-------+-----+-------+
|1|King's Co.| | | | | | | | |
| |Day Coll.,| | | | | | | | |
| | No. 25,| 99.02 |0.22| Nil | Nil | 0.19| 0.26 | 0.04| Nil |
| | | | | | | | | | |
|2|Antrim, | | | | | | | | |
| |1903, 235,| | | | | | | | |
| | No. 9, | 97.31 |0.31| 0.14 | 0.18 | Nil | Nil | Nil | Nil |
| | | | | | | | | | |
|3|Galway, | | | | | | | | |
| | W. 241, | | | | | | | | |
| | No. 19,| 98.06 |0.22| Nil | Nil | 0.58| Nil | 0.17| Nil |
| | | | | | | | | | |
|4|Cork, | | | | | | | | |
| | R. 459, | | | | | | | | |
| | No. 7, | 98.30 |0.30| 0.27 | 0.37 | Nil | Nil | Nil | Nil |
| | | | | | | | | | |
|5| W. 248, | | | | | | | | |
| | No. 28,| 97.24 |0.18| Nil | 1.54 | Nil | 0.25 | Nil | Nil |
+-+----------+-------+----+---------+--------+-----+-------+-----+-------+

[