See /var/log/dpkg.log. Or do ...

less /var/log/dpkg.log

It will list all activity regarding packages.

More specific to installation:

grep installed /var/log/dpkg.log

It will list it like this:

2014-01-02 11:20:07 status half-installed libmodule-pluggable-perl 3.6-1

2014-01-02 11:20:07 status half-installed libemail-simple-perl 2.003-1

2014-01-02 11:20:07 status half-installed libemail-abstract-perl 2.134-1

2014-01-02 11:20:07 status half-installed libtime-piece-perl 1.11-2

2014-01-02 11:20:07 status half-installed libemail-date-perl 1.102-1

2014-01-02 11:20:07 status half-installed libmime-lite-perl 3.020-2ubuntu2

2014-01-02 11:20:08 status installed libmodule-pluggable-perl 3.6-1

2014-01-02 11:20:08 status installed libemail-simple-perl 2.003-1

2014-01-02 11:20:08 status installed libemail-abstract-perl 2.134-1

2014-01-02 11:20:08 status installed libtime-piece-perl 1.11-2

2014-01-02 11:20:08 status installed libemail-date-perl 1.102-1

2014-01-02 11:20:08 status installed libmime-lite-perl 3.020-2ubuntu2