“So long as I am interested in one-eleventh of the profits, and have to bear one-eleventh of the losses, it does not signify to what particular year's account that loss was carried; for it was the same thing to me whether carried to the one year or the other, if during the whole of that period my interest was to the extent of one-eleventh; but if it be found that my interest was altered in the year 1815, it was of great consequence to me, whether those losses are thrown on the profits of that particular year, or some of those losses are carried to anterior