11.   But the public face of museums - particularly science museums - has undergone a radical transformation.

12.   But their ancestors had changed the face of California earth.

13.   By World War I, new technology allowed the introduction of open-pit mining, and the face of Bisbee began changing for ever.

14.   Faces of great dignity and considerable charm.

15.   Following the Civil War came the period of rapid railroad develop-ment that changed the face of Kansas for ever.

16.   For days Kartoffel stood below it as storms flashed across the vertiginous face of ice and rubble.

17.   Galton developed a technique for superimposing a number of photographed faces of people with shared characteristics or circumstances.

18.   Graduated separatism, the acceptable face of separatism, can be seen as the ripples which pass outwards from this.

19.   He became aware of the wind getting up a little more, sending the small clouds scudding across the face of the moon.