Finite-size exact diagonalization of the Hamiltonian for four, eight a
nd 16 electrons in a half-filled Landau level under periodic boundary
conditions in a rectangular geometry was carried out. The magnitude of
the peak value of the structure factor is found to increase with the
system size to the power 0.36, consistent with a picture of a quasi-so
lid discussed by Chui. The energy difference of the lowest-energy stat
e of the two different particle-hole symmetry manifolds decreases as t
he system size is increased, suggestive of broken particle-hole symmet
ry.