Crossword-Solution: TRACHEAS 8 letters, 2 clues 🏆 scrabble score: 13

But each of the cords which together form this étui, is itself composed of an almost infinitely delicate thread twisted into a screw, like the common spring of a letter-weigher or a Jack-in-the-box, but of exquisite fineness." Upon this, two pages and an elaborate figure are given to these 'trachées'--tracheas, the French call them,--and we are never told the measure of them, either in diameter or length,[39] and still less, the use of them! I collect, however, in my thoughts, what I have learned thus far.