565. Greek stems in #-i-# are usually declined like Latin ones, with the
accusative in #-im#, and ablative in #-ī#. But the accusative sometimes
has #-n#: as, #poēsin#, _poetry_, #Charybdin#; similarly #Capyn#; and a
vocative occurs: as, #Charybdi#. The plural genitive #Metamorphōseōn#,
and as ablative #Metamorphōsesin#, occur as titles of books.
CHARACTERISTICS OF STEMS IN #-i-#.
566. Parisyllables with nominatives in #-is#, #-ēs#, or #-e#, and a few
in #-er#; and imparisyllables with nominatives in #-al#, and in #-ar#
for #-āre#, have stems in #-i-#.
But #canis#, #iuvenis# (486), #volucris# (490), #mēnsis# (492), #sēdēs#
(476), and #vātēs# (478), have consonant stems.
567. Under #-i-# stems may also conveniently be grouped the following
classes, which have usually a consonant form in the singular, and an
#-i-# form in the plural:
568. (_a._) Imparisyllabic adjectives with the genitive in #-is#, except
comparatives and the dozen with consonant stems (624), and
imparisyllables with a nominative in #-s# or #-x# preceded by any
consonant except #p#. But #cōniūnx# (472) and #caelebs# (480) have
consonant stems.
569. (_b._) The following monosyllables: #ās#, _unit_, _an as_, #faex#,
_dregs_, #fraus#, _deceit_, #glīs#, _dormouse_, #līs#, _strife_, #lūx#,
_light_, #mās#, _male_, #mūs#, _mouse_, #nox#, _night_, #stirps#,
_trunk_, #vīs#, _strength_. Also #fauce#, _throat_, and #compede#,
_fetter_, both Ab., no N., and #fornāx#, _furnace_.
GENDER OF CONSONANT STEMS AND #-i-# STEMS.
570. The gender of many of these substantives is determined by their
meaning (404-412); that of participles used as substantives follows the
gender of the substantive understood; Greek substantives follow the
Greek gender. The gender of other words may be conveniently arranged for
the memory according to the nominative endings as follows.