Chapter

 1 IV  |  column of air an ascensional movement of forty-five meters a second,
 2 VI  |     give them that liberty of movement and speech of which they
 3 VI  |       should have noticed the movement due to the current —”~“That
 4 VII |       what is this mechanical movement in the flight of birds,
 5 VII |   will produce an ascensional movement, and the models experimented
 6 VII |     of these axes had its own movement independent of the rest,
 7 VIII|       equal power of vertical movement—in a word, if, when, we
 8 IX  |     of screws, whose gyratory movement gave their arms the appearance
 9 XVI |      Fortunately the gyratory movement of the water was opposite
10 XIX |       received their rotatory movement.~It was the screw at the
11 XXII|      gudgeon. The ascensional movement did not cease until the “
12 XXII| atmosphere and deprived it of movement; not a breath of wind was