Chapter

 1 I    |    meteorology began to have much weight in the world of science.~
 2 IV   |         two grammes, could lift a weight of four hundred grammes,
 3 IV   |         two hundred times its own weight, the problem of aviation
 4 IV   |          increase of the size and weight of the animal. Hence we
 5 VII  |          is great the work of the weight varies in almost inverse
 6 VII  |         is also known that as the weight of a flying animal increases,
 7 VII  |         shown that the disposable weight, that is to say the weight
 8 VII  |        weight, that is to say the weight it is possible to deal with
 9 XV   | surmounted by a metal bird, whose weight rendered the cut more certain.~
10 XVIII|       eating up, so to speak, her weight, although she weighed less