RISE AND FALL METHOD. Given below is the sshematic arrangement of lines for a level route run from BM$-1$ to BM$-2$ in which intermediate foresights to a number of points have been observed. It is desired to determine the elevation of BM$-2$ and also the elevations of the intervening points, prepare and complete an appropriate format of level notes for the portrayed information using the rise and fall method of leveling. Also show the customary arithmetic check.