Does anyone know where I might find a list of 3rd Declension I-stem Nouns?
What exactly are you looking for? A list of all of them? All you need is a representative sample and a sense of how they are formed, which you can find in any beginning Latin text. Here is a quick summary:
Masculine and Feminine Nouns
- Ending in -es or -is in the nominative singular and having the same number of syllables in the genitive singular.
hostis, hostis, m., enemy
caedēs, caedis, f. murder
- Ending in -ns, -rs or -bs in the nominative singular
īnfāns, īnfantis, m. baby
mors, mortis, f. death
urbs, urbis, f. city
- of one syllable in the nominative singular whose base ends in two consonants
nox, noctis, f. night.
Neuter Nouns
Particularly neuter nouns ending in -al or -e. If you haven’t learned third declension adjectives, these will help you the most when that time comes.
animal, animalis, n. animal
mare, maris, n. sea
And cave canem! Canis, canis m/f is not an i-stem.
I was looking for a list of all of them (or at least the more common ones), because of words like canis and others that don’t follow the rules and I did find one here:
http://www.cultus.hk/latin_lessons/declension/index.html
for those that are interested. It includes other declensions as well.