His cooked food arrived at the proper intervals from the kitchen.

The second skirmish line moved forward at the proper interval.

After a proper interval she excused herself and left the men alone.

After waiting the proper interval, he spoke to his father.

"He will remain with you and administer your medicine at proper intervals."

He had not even the presence of mind to grunt at proper intervals.

They moved in good order, keeping proper intervals and paying attention to their flanks.

Twenty-four inches is the proper interval between men for attack.

Company and platoon commanders checked their lines for proper interval.

With a few low-keyed suggestions, at proper intervals, I let them develop my system themselves.