Waterwheels beside a river

In the Great Hsia. A Tsinghai flour mill. Wheel on left revolving. Bottom stone of mill above revolves. Upper stone suspended by a number of ropes.

Dr. Z. & animal going down to ferry.

The Yellow River at work. Mr. Griebenow in background is 6'4"

Note buckets which carry the water. The spill lub[r]icate[s] the axel [sic].

Lanchow. Along the wall & Yellow River. Note 3 water wheels in distance.

Lanchow. Waterwheels on the Yellow River