II.  PERFECT ENDS IN -UI.

aperio      aperire     aperui      apertus          open
operio      operire     operui      opertus          cover
salio       salire      salui       ——­             leap

III.  PERFECT ENDS IN -SI.

saepio saepire saepsi saeptus hedge in sancio sancire sanxi sanctus ratify vincio vincire vinxi vinctus bind amicio amicire ——­ amictus envelop fulcio fulcire fulsi fultus prop up refercio refercire refersi refertus fill sarcio sarcire sarsi sartus patch haurio haurire hausi haustus draw sentio sentire sensi sensus feel

IV.  PERFECT IN -I WITH LENGTHENING OF STEM VOWEL.

venio       venire      veni        ventum (est)     come
advenio   advenire    adveni      adventum (est)   arrive
invenio   invenire    inveni      inventus         find

V. PERFECT WITH LOSS OF REDUPLICATION.

reperio     reperire    repperi     repertus         find
comperio    comperire   comperi     compertus        learn

VI.  USED ONLY IN THE PRESENT.

ferio       ferire      ——­        ——­             strike
esurio      esurire     ——­        ——­             be hungry

VII.  DEPONENTS.

  largior largiri largitus sum bestow
     So many others.
  experior experiri expertus sum try
  opperior opperiri oppertus sum await
  ordior ordiri orsus sum begin
  orior oriri ortus sum arise
  Orior usually follows the Third Conjugation in its inflection; as
  oreris, oritur, orimur; orerer (Imp.  Subj.); orere (Imper.).
  metior metiri mensus sum measure
  assentior assentiri assensus sum assent

* * * * *

IRREGULAR VERBS.

124.  A number of Verbs are called Irregular.  The most important are sum, do, edo, fero, volo, nolo, malo, eo, fio.  The peculiarity of these Verbs is that they append the personal endings in many forms directly to the stem, instead of employing a connecting vowel, as fer-s (2d Sing. of fer-o), instead of fer-i-s.  They are but the relics of what was once in Latin a large class of Verbs.

125.  The Inflection of sum has already been given.  Its various compounds are inflected in the same way.  They are—­