The men should be taught to use this time to adjust their clothing and equipment, and answer the calls of nature.
Never neglect the calls of nature, and if possible have a passage from the bowels every night before retiring.
I never stay long in places for answering calls of nature, nor in pleasure-gardens attached to the house.
His distress may be imagined, when the nearest horse yielded to the call of nature, and voided over the unfortunate man the contents of its bladder.
He might have been answering a call of nature, and the movement of the lantern accidental.