Monday, 20 October 2014

Large Black Slug & the greasy wheel -- really!

The large black slug (aka black arion) is a species of large land slug.  The size of the slug varies from 10 to 15 cm.  The slug covers itself in a thick foul-tasting mucus which serves as both protection against predators as well as a measure to keep moist.  It is somewhat difficult to wash off.  Arion ater was used as grease to lubricate wooden axle-trees or carts in Sweden.  This use is documented since at least the 18th century! (

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