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T-Rex: T-Rex presents The Periodic Table:
T-Rex: 26 IRON
T-Rex: Iron has been used since ancient times. The Iron Age, in fact! Which is not as coincidental as it sounds!
T-Rex: The alchemical symbol for iron is
T-Rex: Which is still used on artefacts of cultural significance today.
T-Rex: Such as T-shirts and pillow cases.
T-Rex: Before the Iron Age, people used to bronze their clothes.
The author writes:
Finally, another element that I know something about without having to trawl through Wikipedia pages to find out interesting facts on.
 Iron Age, Wikipedia.