1.   And if those whose symbols were thus explained hotly denied the interpretations, that would simply be further proof.

2.   As further proof of this there was a continuous drift of wind-blown spume shooting over us like blobs of candy floss.

3.   As they talked a further proof seemed given them that Apollo could speak falsely.

4.   He showed his driving licence as further proof of his identity.

5.   Still, I can offer further proof.

6.   This latest interview was further proof of how good at her job Cara was.

7.   She believes him and has no need of further proof.

8.   The extremely rare use of the bare infinitive with the passive of perceptual verbs adds further proof that this is the case.

9.   His career is further proof of the esteem in which the sixth-century aristocracy and the courts of the Merovingian kings continued to hold literary skill.