Crossword-Solution: MNOP 4 letters, 56 clues 🏆 scrabble score: 8

This, like the common furnace, is composed of the ash-hole HIKL, the fire-place KLMN, the laboratory MNOP, and the dome RRSS, with its funnel or chimney TTVV; and to this last several additional tubes may be adapted, according to the nature of the different experiments.

From L and R, as before, draw lines through all the leading points of the pictures, and we shall have the points A, _a_ united at _m_, the points B, _b_ at _n_, the points C, _c_ at _o_, and the points D, _d_ at _p_, the points S, _s_ at M, and the points S′, _s′_ at N, forming the cone _mnop_, with its base _mn_ towards the observer, and its summit _op_ more remote.