using Xresources for geometry

[Baloff]

Hello
in my Xresources I have

emacs*Background: Black
emacs*Foreground: White
emacs*pointerColor: White
emacs*cursorColor: White
emacs*bitmapIcon: on
emacs*font: fixed
emacs*geometry: 160x80

the last line I changed from 80x40 but no changes happened when I
restarted emacs.

isn't suppose to work?
nothing in my .emacs which has to do with (setq initial-frame-alist
...


thanks