Chapter

 1 IV |          furnished with wings like birds, or membranes like certain
 2 IV |          flight of large and small birds one simple idea has prevailed—
 3 VII|       machines in imitation of the birds, that they trusted to realize
 4 VII|         and his helicopter made of birds’ wings. in 1852 came Letur
 5 VII|    reproduce the natural flight of birds.~3. Aeroplanes, which are
 6 VII|          movement in the flight of birds, whose action is so complex?
 7 XI |          dead. From every side the birds flew down on to the carcass,
 8 XI | innumerable dogs, the cries of the birds of prey, and above all,
 9 XII|          the slopes. There were no birds, save a couple of those
10 XV |           into the flocks of these birds which, a dozen or so at
11 XVI|            penguins and myriads of birds; and, when the “Albatross”
12 XIX|            of different kinds; and birds—partridges and bustards—