  We have performed a detailed transverse magnetization study of the pyrochlore
antiferromagnet Gd2Ti2O7. A transverse magnetization of about 10^{-3}M_{sat} is
observed in the low-temperature ordered phases. These measurements result in
the refinement of the Gd2Ti2O7 phase diagrams. Observation of a transverse
magnetization indicates loss of the cubic symmetry in some of the magnetic
phases and provides new information for a better understanding of the
complicated magnetic ordering of Gd2Ti2O7.
