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 1 6 |  nature nothing has a movement backwards, nor has a moving animal
 2 7 |       left hip rather inclined backwards, so that their middle becomes
 3 12|        For men bend their arms backwards, their legs forwards; quadrupeds
 4 12|      forwards, their back legs backwards, and in like manner also
 5 12|  forwards, impossible if it be backwards. For, if it be forwards,
 6 12|   other way, while it is going backwards. And again, if the flexion
 7 12|     again, if the flexion were backwards, the placing of the foot
 8 12|     one another, one, that is, backwards and one forwards; for in
 9 12|      end of the thigh would go backwards, and the shin would move
10 12|       forth, but his arms bend backwards reasonably enough. If they
11 12|          but the flexion being backwards, as in fact it is, nothing
12 13|      hind may bend either both backwards, as the figures marked A,
13 13|     forwards and the hind bend backwards, or as in D, the opposite
14 13|      case of the legs, the hip backwards, the knee forwards, the
15 13|      ankle in the opposite way backwards. And plainly the lower limbs
16 13|      bending forwards, the hip backwards; wherefore also the ankle
17 13| wherefore also the ankle bends backwards, and the wrist of the hand
18 15|     flexion of the leg must be backwards, as in the hind legs of
19 16|        under (bandy-shape) and backwards is plain. In all such creatures
20 16|      flexion both forwards and backwards; on account of leading,
21 16|       on account of following, backwards. Now since they have to