> OK. One can't tell from the modern Lithuanian forms, though.
> So if I understand correctly, the dative in -ajam comes from
> *-am-jam, and the locative in -ajame comes from *-am-en-jam-e(n)?
>
For the dative, the following developement is usually postulated: *-uo jam
(still attested in the dialects) > (analogy) *-am jam > (agglutination)
*-amjam > (simplification) -a~jam.
The locative, strictly speaking, comes from (*-ei jam > (analogy)*-am jam >
(agglutination), though I'm not sure the development was exactly like that)
*-am-én# jam-én, since the adjective's -en(-) shows the auslaut behaviour
here (> nasalized -e,(-), otherwise one would expect something like
/-ameniame,/ for archaic Lithuanian. Still two (independent) words at the
time the *-én was being agglutinated.
Sergei