Possible Clues:

• Floor tiler alongside one group of learned people
• *Book reviewers, for example
• Smart figures organised rite in clipped language of old
• The well-read intelligentsia
• Literary intelligentsia is spinning first class rubbish
• US measure it, beginning to accelerate in recession, people learned
• American volume at institute for the learned
• The intelligentsia invest it in retail trade
• Bookish types having some wine in Boston at lunchtime?
• Low-calorie peach: one they devour a lot