Thornborough "debate"

[Venutius]

"The 'subsoil' referred to in the paper about the green glass experiment actually means the natural gravel surface, i.e the surface into which negative archaeological features cut. Above this is ploughsoil."

I'm a little confused about this, do you mean the balls were placed no deeper than the existing plough depth, and that no specific measures were taken to ensure the topsoil covering had the same density as it had previously?

I'd have thought they would have been placed at varying depths below the existing plough horizon, using different coloured beads to denote those differing depths. Maybe I'm reading this wrong.

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