Castelles

• castelles in the blowne: Castello Brown
• Castle Browne (renamed Clongowes Wood)
• castles in the air: unattainable schemes, daydreams, idle fancies
• im Blauen (German) in the blue
  • studying castles in the blue – i.e. detecting (grandiose) shapes in the clouds a la Polonius’ “Very like a whale.” Also probably an echo of “castles in Spain.”