The Mice at Play -- The Apple of Discord -- The Strayed Falcon.
Description  p.,  leaves of plates : ill. ; 17 cm.
The low page total (for a Yonge work) suggests that these three items are relatively short.
From the Laski and Tillotson bibliography in Chaplet of Pearls:
The Mice at Play (1860)
A story which contains a play
The Apple of Discord, a Play (1864)
The Strayed Falcon (1860)