In building up the heap a number of narrow vertical passages are left to afford a draught for the fire.
The book appears to have been printed in France, and the idea of Dame Scotia's exhortations to her sons, the Three Estates, is borrowed from Alain Chartier's Quadrilogue invectif, some passages of which are appropriated outright.
In some passages the poet seems to take delight in casting dramatic illusion to the winds.
Haydn finds the pianoforte so completely capable of expressing his meaning that he is at a loss to find independent material for any accompanying instruments; and the violoncello in his trios has, except perhaps in four passages in the whole collection of thirty-three works, not a note to play that is not already in the bass of the pianoforte; while the melodies of the violin are, more often than not, doubled in the treble.
Mozart imports from church music 3 trombones for special passages in his operas.