A River snail in Oxfordshire is “Hoddy-doddy”; in Northamptonshire the Wall snail is “Packman snail.”

[I]n general, inland waters exhibit much (2–3 orders of magnitude) higher concentrations of ²²²Rn than of ²²⁶Ra. This fact has, however, only very little meaning from the point of view of radiological protection, because ²²⁶Ra being a long-lived, alpha-active boneseeker, belongs to highly radiotoxic substances, whereas ²²²Rn, a short-lived noble gas, does not.

He would not have changed; the Slytherinish traits are already there.

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