Boswell : We had wine before the Union.

Johnson : No, sir; you had some weak stuff, the refuse of France, which would not make you drunk.

Implying that the Union of Scotland and England unfettered the drinking of the Scots, and ultimately caused the Scots folk mass drunkenness?

Implying that Scotland's alcohol problem is at root a fault of the the Acts of Union: the Union with Scotland Act 1706 passed by the Parliament of England, and the Union with England Act passed in 1707 by the Parliament of Scotland.