Hail storms, cause of, in warm weather, B. Hallowell, xv, 361.
— —, phenomena and causes of, D. Olmsted, xviii, 1.f
— —, reply to A. T. Christie on, by D. Olmsted, xx, 373.
— —, A. T. Christie's views on, xx, 373.
— —, A. Jones, xxiii, 35.f
—, —, remarks on, W. C. Redfield, xxxiii, 55.
—, — in Louisiana, W. M. Carpenter, xxvii, 171.
—, —, rods a protection against, x, 196.
Hail-rods, in France, x, 196; xii, 398.
— —, —, efficacy of, xiv, 37.