Sentence:  [H]e ſeem'd amaz'd at the Sight of our Bark, having never ſeen any thing of that Kind before, for their Boats are moſt wretched Things, ſuch as I never ſaw before, having no Head or Stern, and being made only of the Skins of Goats, ſewed together with dried Guts of Goats and Sheep and <WSD>done over</WSD> with a kind of ſlimy Stuff like Roſin and Oil, but of a moſt nauſeous, odious Smell, ... 
Meaning of the word marked with <WSD> tags:  To cover with; to smear or spread on to.