  EROS (Exp\'erience de Recherche d'Objets Sombres) has been monitoring the
luminosity of 4 million stars in the Large Magellanic Cloud in order to search
for gravitational microlensing by unseen objects in the galactic halo. We
present here the results from 3 years of EROS Schmidt plates data. Two stars
exhibit light curves that are consistent with a sizeable microlensing effect.
CCD data obtained later on revealed that one of these stars is an eclipsing
binary system. Combining Schmidt plates data and the published results from our
16 CCD camera, we set upper limits on the number of unseen objects in the halo
in the mass range $[10^{-7},1]\Msol$. (Submitted for publication in Astronomy
and Astrophysics)
