Last week we listened to Handel's "Harmonious Blacksmith" played on the harpsichord. Here is another example of Handel's harpsichord music (Händel Prelude and Air with Variations in B major, HWV434 by Eberhard Kraus). Listen especially for the arpeggios. (I think it's the same one meant in The Term's Music, since that's the one that Brahms used for his Variations.)
Compare Handel's harpsichord variations with this Bach Menuet. Can you see any arpeggios in the score (before you play the clip)?