1.   The cone would then float up into the concave funnel and constrict the water passage, thus throttling its flow.

2.   Strickland said the timing was important because of concern that installing the pipe could make it difficult to flush the drilling mud out of underground water passages.

3.   The creation of a water passage across Panama linking the Atlantic and Pacific oceans was a phenomenal undertaking, the moon shot of its time.

4.   The two biggest causes of commode replacement are unseen firing flaws and clogged water passages. . . .