Nisĭ is always short, and quasĭ’s
Short also, so are certain cases
In i—Greek vocatives and datives
(At least if we may trust the natives;)
Making their genitives in os,
For instance—Phyllis, Phyllidos.
(A name oft utter’d with a sigh,)
Whereof the dative ends in ĭ.
Words in l ending short are all,
Save nīl for nihil, sāl, and sōl,