204. One thing still more important to observe than the mode of appeal, is calm and concentration of thought joined to an ardent desire and a firm will to succeed ; and, by will, we do not understand an ephemeral will, that acts by jerks, and is, at each minute, interrupted by other preoccupations; but a serious, persevering, sustained will, wit/tout impatience or fever- ish desire. Concentration of thought is favored by solitude, silence, and the removal of all that might dis- tract the attention. But one thing more remains to be done ; every day renew the effort for ten minutes or a quarter of an hour, and that during fifteen days, a month, two months, and more if necessary : we know mediums who were not formed until after six months' practice, while others write easily from the first.