11.  It was a natural thing, like air.

12.  This is this natural thing inside me.

13.  It had seemed the most natural thing in the world.

14.  As if it were the most natural thing in the world, he put his arms round her and held her close.

15.  The carcass is then pulled apart, but that is a natural thing for hounds to do.

16.  It seemed the natural thing to have him singing at the wedding.

17.  At the time, joining the association seemed the natural thing to do, Paris said.

18.  After the moves are complete and games finished, the natural thing to do is review them all.

19.  But Matthiessen here never quite ignites with that combustible combination of evocative prose and deep understanding of all things natural.