Loud voices and barking dogs were the principal evidence.

Fossils are the principal evidence of hominid evolution, but they take scientists only so far.

These personal stories, together with the prefaces to his theological compilations, provide the principal evidence for his career.

The principal evidence of imperial days is the garden's long and lofty subterranean gallery, a place to walk in cool shade.

At the trial, the prosecution's principal evidence was the defendants' confessions to police officers.

"Well, without the principal physical evidence, I'm really not sure what you think I can do to help."

Since this letter was the principal evidence brought against me at my trial for treason, I ought now to produce it.

The principal evidence of the prosecution was my cipher-letter to Wilkinson.

The principal evidence considered was sworn statements of the defendants during their plea agreement process before the federal court.

The principal evidence for Scott's radical opinions comes from his extensive diaries and other unpublished writings.