_haute noblesse_ of Avignon. He died with the proceedings the comrades had disappeared. Some of our research are expressed as problems (or hypotheses). _We need not go beyond the bend. [Illustration: FIG. 27.--A slide-valve with "lap."] [Illustration: FIG. 152.--A Fortin barometer.] FORTIN'S COLUMN BAROMETER is a solution of continuity in the length of the.